Category Archives: Mono Framework

Connect(); Keynote Releases

As you may have heard during the Connect(); Keynote session, we’re releasing a number of new products to our Alpha and Stable channels, with many new features available to sample right now.

 

 


WEB PREVIEW – VISUAL STUDIO FOR MAC


We are releasing our first preview of Visual Studio for Mac. Visual Studio for Mac is an evolution of Xamarin Studio, and includes all the functionality of Xamarin Studio 6.2.

Many changes have been made to the look-and-feel, terminology and default settings to to align more closely with Visual Studio, while remaining a Mac-centred development experience


Products Released

 

 


STABLE RELEASE – XAMARIN WORKBOOKS & INSPECTOR


We are releasing our first Stable build of Xamarin Inspector and Xamarin Workbooks for iOS, Android, Mac, and WPF applications. Xamarin Inspector is an interactive tool that you can use to diagnose and prototype changes in your application. The inspector can attach to a live application on any of the supported platforms. Xamarin Workbooks provide a blend of documentation and code that is perfect for experimentation, learning, and creating guides and teaching aides.


Products Released

 


STABLE RELEASE – iOS SIMULATOR (FOR WINDOWS)


We are releasing our first Stable build of the iOS Simulator for Xamarin.VS. The remote iOS Simulator provides you with a way to test and debug iOS apps on the simulator entirely from Visual Studio on Windows.

 

 


STABLE RELEASE – XAMARIN PROFILER


Note (11/22): Xamarin Profiler has been updated to build 1.0.2.2 (from 1.0.1.2). The issues fixed in these updates are noted below.

Note (11/17): Xamarin Profiler has been updated to build 1.0.1.2 (from 1.0.0.24). The issues fixed in these updates are noted below.

Xamarin Profiler 1.0 is now available for download! The Xamarin Profiler Preview integrates seamlessly with your existing Xamarin toolchain to collect information about your Xamarin apps. Use it to find memory leaks, resolve performance bottlenecks, and add polish to your apps before getting them out the door.


Products Released

  • Xamarin Profiler 1.0.2.2
    • Release Notes
    • Issues Addressed:
      • 44253 – Application not rebuilt with profiling support when profiling
      • 47263 – Couldn’t retrieve SSH Fingerprint

 

 


ALPHA RELEASE – CYCLE 9 UPDATED PREVIEW


An updated preview of our next upcoming feature release (called Cycle 9) can be downloaded from the Alpha channel.


Cycle 9 Alpha Known Issues

  • [Xamarin.VS] – At this time, as a result of VS 2017 moving away from .msi packaging toward utilization of the Visual Studio Installer system, Xamarin for Visual Studio 2017 can not be installed at the same time as Xamarin for Visual Studio 2015/2013/2012. Please note that installing Xamarin to Visual Studio 2017 will render any previous installation of Xamarin in an earlier version of Visual Studio inoperable.
  • [Xamarin.VS]46557 – Android Designer is unable to render in Visual Studio.
  • [Xamarin.VS]46559 – VS hangs while Running/debugging an Android Wear App
  • [Xamarin.VS] – 46750 – User is not able to Create Xamarin.Forms application on Windows 7 with VS2012/13
  • [Xamarin.Android] 46509 – New linker failure in Xamarin.Android Cycle 9 on Windows error MSB4018: System.ArgumentNullException: Value cannot be null. Parameter name: instruction
  • [Xamarin.Android] 46510 – New linker failure in Xamarin.Android Cycle 9 Error executing task LinkAssemblies: Value cannot be null. Parameter name: variable

Cycle 9 Alpha Products Released 

 

 


STABLE RELEASE – CYCLE 8 SERVICE RELEASE 1 UPDATES


Note (11/22): Xamarin.VS has been updated to 4.2.1.64 (from 4.2.1.62) .Xamarin Profiler has been updated to build 1.0.2.2 (from 1.0.1.2). The issues fixed in these updates are noted below.

Note (11/17): Xamarin.VS has been updated to 4.2.1.62 (from 4.2.1.60), and Xamarin Profiler has been updated to build 1.0.1.2 (from 1.0.0.24). The issues fixed in these updates are noted below.

An updated Xamarin.VS has been released to Stable as part of C8SR1 alongside the newly released Xamarin tools products. 


Cycle 8 Service Release 1 Stable Products Released 

 

(UDPATED) Beta Release: Cycle 8 Service Release 1 RC Builds

UDPATE – Xamarin.VS, Xamarin.iOS, Xamarin.Android, and Xamarin.Mac have all been updated to slightly newer versions.

  • Xamarin.VS version is now 4.2.1.57 (was 4.2.1.52)
  • Xamarin.iOS version is now 10.2.1.5 (was 10.2.1.4)
  • Xamarin.Android is now 7.0.2.38 (was 7.0.2.37)
  • Xamarin.Mac is now 2.10.0.113 (was 2.10.0.111)

 

We are releasing a Beta preview of our next release, called Service Release 1. This release contains the Release Candidates of C8SR1, which should be shipping to the Stable Channel soon.

 As this is a Beta build, there are some known issues and the possibility of new issues being found during testing.

Please check out the product release notes to see all the fixes and known issues for this release.

If you see a behavior that looks suspicious in these versions, and if it isn’t clear whether one of the known issues in the release notes matches the problem, please file a quick bug report to let the team know.

If you notice an error in this blog post or have trouble downloading one of the installer packages, please let us know in the corresponding forum thread.


Known Issues

  • [Xamarin for Visual Studio], [Xamarin Studio] – Upcoming compatibility feature, tracked in 44330 – “This version does not have support for files saved in Xcode 8 format” appears when attempting to edit a file with the Xamarin iOS designer after having edited the file with Xcode 8. Xcode 8 introduced a new, non-backwards-compatible XML format for Interface Builder documents that is not yet supported in Xamarin’s iOS designer. As it turns out, the beta version of Xcode 8.1 from Apple has in fact backed out of several of those format changes. Candidate fixes are now under test for Xamarin’s iOS designer to cover the remaining format changes as present in Xcode 8.1.
  • [Xamarin Studio]43188 – Sporadic “Out of memory” error during build leaves solution in an unbuildable state until the project is reloaded.
    • Improved in this release: Cycle 8 Service Release 1 includes some fixes that should hopefully eliminate the need to reload the project in this scenario. Additional fixes for the “Out of memory” error itself are also planned.
  • [Xamarin for Visual Studio], [Xamarin Studio]43566 – In a few remaining scenarios, the iOS Designer initialization process might still cause a running iOS 10 simulator to become non-responsive. The designer initialization happens when opening an iOS project in Xamarin Studio and during the connection to the remote Mac in Visual Studio. This issue does not affect Xcode 7.3, iOS 9.3 (and lower) simulators.
    • Workaround: Quit and restart the simulator after the designer has initialized. You can then proceed to use the simulator again as normal.

Products Released

  • Xamarin Studio 6.1.2.44
  • Release Notes
    • Issues Addressed:
      • 45535 – User is not seeing iOS Simulator in Xamarin Studio
      • 43675 – New “run configurations” menu means we can’t see which emulator is selected
      • 45358 – User is not seeing iOS Simulator in Xamarin Studio when using Xcode 8.1 beta
      • 42779 – Random crash caused by LogViewProgressMonitor
      • 44537 – XS 6.x branches are not reading XML documentation from 3rd party libraries
      • 44378 – Mac Migration Tool Not Working
      • 44285 – Xcode 8 quits after Xamarin Studio returns to the foreground when using Xcode 8 via Open With > Xcode Interface Builder.
      • 44144 – Cannot open axml files using Layout Editor
      • 40314 – “Reopen Closed Tab” option does not work on Assembly Browser tabs
      • 38791 – Update default product templates to benefit from C#6
      • 15222 – Open With doesn’t work when file is open in another editor
      • 34994 – Dialogs do not highlight default [“Return”] button on Mac
      • 46062 – Cannot create a WatchKit App (watchOS2) project’
      • 45855 – “Failed to launch the simulator: Could not load the framework ‘libswiftos.dylib’ (path: /Applications/Xcode.app/Contents/Frameworks/libswiftos.dylib): not found.” when attempting to launch iOS 10.1 simulator via `mlaunch`
      • 45644 -[iOS Designer] Accessing Designer throws error “Unable to boot device because it cannot be located on disk”
      • 45861 – “May Slow Down Your iPhone … The developer of this app needs to update it to improve its compatibility.” because of default “i386” supported architecture setting in the iPhoneSimulator configuration on new projects
      • 45856 – Missing iOS 10.0 deployment target
      • 45899 – “error HE0035: Could not find a paired iPhone device for the Watch ‘watchOS 3.1 (14S471a) – Apple Watch – 42mm'” on Series 1 Watch simulator
  • Xamarin.VS 4.2.1.52
  • Release Notes
    • Issues Addressed:
      • 44578 – Cannot debug any solution from VS on my iPad anymore
      • 44997 – Android Designer shows progress indicator indefinitely
      • 44468 – Can’t save 120×120 App Icons in Info.plist editor
      • 45122 – Import Existing Keystore fails with java.io.IOException: Keystore was tampered with, or password was incorrect
      • 44567 –  “Launch failed. The app ‘app’ could not be launched on ‘iPhone’: Object reference not set to an instance of an object” when attempting to deploy to certain iOS devices in certain environments.
      • 44958 – No Available Devices are Listed After Changing Start Up Project via the Run button
      • 43316 – Native References in iOS Binding projects do not build in VS
      • 45249 – “Could not install package ‘Xamarin.Forms 2.2.0.45’. You are trying to install this package into a project that targets ‘Unsupported,Version=v0.0′” when adding a new XAML page to a Forms Shared Project
      • 44432 – Entitlements view doesn’t save changes made in designer nor loads data from plist
      • 43948 – Android Designer shows progress indicator indefinitely
      • 44284 – User is not getting option ‘Top Shelf Image Wide’ under Assets catalogs for tvOS template in VS.
      • 38570 – “The project requires user input. Reload the project for more information” error prevents loading a newly created F# Blank App (Android) tempate app
      • 44394 – The error message shown in the Output window when attempting to use a 7.x device with Xcode 8 does not include the compatibility error returned by Xcode.
      • 44273 – “An error occurred trying to load the page.” appears in the “Project Properties > iOS Build” tab when not connected to a Mac
      • 45333 – [Android Archive Manager and Publishing Workflow Enhancements] Differentiator between Alias, Wizard Path, Key Details, Keystore Path]
      • 45676 – “Failed to launch the simulator: Could not load the framework ‘libswiftAppKit.dylib’ … Library not loaded: @rpath/libswiftQuartzCore.dylib” when attempting to launch iOS 10.1 simulator.
      • 44551 – Attempting to deploy app with “iOS Application > Devices” set to “iPhone/iPod” on physical iPad has no effect and produces no error messages or warning in any log files
      • 45862 – “May Slow Down Your iPhone … The developer of this app needs to update it to improve its compatibility.” because of default “i386” supported architecture setting in the iPhoneSimulator configuration on new projects
      • 44570 – building with VS 2015 Update 3 and msbuild property IpaPackageDir is defined and custom solution profile an error is thrown when cleanup starts from mac xamarin throws error
      • 45711 – “Error opening installation log file. Verify that the specified log file location exists and is writable” when attempting to install update if username contains accented characters
      • 44724 – “Failed to read file attributes for “/Users/macuser/Library/Caches/Xamarin/Resources/Images.xcassets”” when rebuilding iOS project that uses asset catalogs
  • Xamarin.iOS 10.2.1.4
  • Release Notes
    • Issues Addressed:
      • 44701 – “Could not link assemblies” due to NullReferenceException in certain scenarios during bindings optimization
      • 45379 – “Assertion: should not be reached at … mono/mono/sgen/sgen-scan-object.h:90” causes crash on simulator and device
  • Xamarin.Android 7.0.2.37
  • Release Notes 
    • Issues Addressed:
      • 44535 – “‘System.ComponentModel.INotifyPropertyChanged’ is defined in an assembly that is not referenced. You must add a reference to assembly ‘System.ObjectModel” for projects that reference PCLs with `INotifyPropertyChanged`
      • 44633 – Enabling <AndroidUseSharedRuntime> in some projects causes `classes.dex` to not deploy to device
      • 34498 – AOT task fails if project path has a space in it
      • 43915 – Getting build error on Android F# app when using ‘Array.take’.
      • 44193 – Warning when building Forms app: MSB3247 Found conflicts between different versions of the same dependent assembly
  • Mono Framework 4.6.2.6
  • Release Notes
    • Issues Addressed:
      • 39832 – SIGSEGV when running roslyn
      • 44349 – Mono.Data.Sqlite fails to store seconds in timestamp value to a table

Installing the Beta and switching back to Stable

You can install this new Beta version or switch back to the current Stable version by changing updater channels.


Upcoming Release Dates

Beta 1 – Oct 19th, 2016

Beta 2 – This Release!

Stable – October 2016

(UPDATED) Stable Release: Cycle 8 Service Release 0

Update We are releasing updated builds for some of our products on top of Cycle 8 Service Release 0 to address issues 4430042443, and 44708:

  • Xamarin.VS updated to 4.2.0.703
  • Xamarin.iOS updated to 10.0.1.10
  • Xamarin.Android updated to 7.0.1.3
  • Xamarin.Mac updated to 2.10.0.105
  • Mono Framework updated to 4.6.1.5

If you see a behavior that looks suspicious in these versions, and if it isn’t clear whether one of the known issues in the release notes matches the problem, please file a quick bug report to let the team know.

If you notice an error in this blog post or have trouble downloading one of the installer packages, please let us know in the corresponding forum thread.


Known Issues

  • [Xamarin Studio]44285 – Xcode 8 quits after Xamarin Studio returns to the foreground when using Xcode 8 via Open With > Xcode Interface Builder.
  • [Xamarin.Android]44633 – “Deployment failed because of an internal error: Failure [INSTALL_FAILED_DEXOPT]” when <AndroidUseSharedRuntime> is enabled in certain projects because classes.dex is not deployed to device as expected.
  • [Xamarin for Visual Studio]44535 – “‘System.ComponentModel.INotifyPropertyChanged’ is defined in an assembly that is not referenced. You must add a reference to assembly ‘System.ObjectModel” for projects that reference PCLs with INotifyPropertyChanged
  • [Xamarin for Visual Studio], [Xamarin Studio]43566 – The iOS Designer initialization process will cause any running iOS 10 simulator to become non-responsive. The designer initialization happens when opening an iOS project in Xamarin Studio and during the connection to the remote Mac in Visual Studio. This issue does not affect Xcode 7.3, iOS 9.3 (and lower) simulators.
    • Improved in this release: Cycle 8 Service Release 0 includes some fixes to reduce the chances of hitting this problem, but additional fixes are also planned.
    • Workaround: Quit and restart the simulator after the designer has initialized. You can then proceed to use the simulator again as normal.

Products Released

  • Xamarin Studio 6.1.1.15
    • Release Notes
    • Major Issues Addressed:
      • 42376 – Crash while loading certain solutions due to incorrect absolute path calculation
      • 43566 (via 44373) – The iOS Designer initialization process will cause any running iOS 10 simulator to become non-responsive.
      • 43655 – Cannot open ‘API Documentation’ in XS on Mac.
      • 43675 – New “run configurations” menu causes most of the emulator name to be cut off
      • 44021 – No way to set sticker icons source in iMessage extension
      • 44128 – Crash when closing designer window and changing API level
      • 44190 – iOS and tvOS Broadcast UI/Upload extension fails to build
      • 44282 – iOS and tvOS Broken Broadcast UI template
      • 44283 – Missing iPhone 7 and Apple Watch Series 2 simulators
      • 44293 – Incorrect target framework profile for new PCL in XS compared to VS
  • Xamarin.VS 4.2.0.703
    • Release Notes
    • Major Issues Addressed:
      • 44146 – “GetFullVsVersionString must be called on the UI thread” error appears when attempting to open Manage NuGet Packages for Solution, sometimes blocking the use of the NuGet package manager in projects that use Xamarin Components.
      • 43566 (via 44373) – The iOS Designer initialization process will cause any running iOS 10 simulator to become non-responsive.
      • 44482 – Unable to connect VS to mac build host
      • 44508 – Selecting a file via the file browser for “Custom entitlements” deletes the selected file from the file system rather than selecting it
      • 44269 – Android Designer with Custom Controls spins loading bar when x86 Java JDK is set as the active JDK under Tools > Options > Xamarin > Android Settings > Java Development Kit Location.
      • 44357 – Getting ‘codesign’ error when ‘Enable incremental builds’ option is checked in VS and no code signing certificate installed on build host.
      • 44262 – Google Play Publishing wizard fails after client id/secret are entered.
      • 44591 – “Run in Test Cloud” context menu item is missing in VS 2015
      • 44460 – ResolveLibraryProjectImports often fails not being able to delete.
      • (Updated) 44300 – Xamarin.Android projects appear as “incompatible” after closing and reopening a solution in a single VS session.
        • A remaining issue related to the Test Recorder preview feature is still under investigation, so it is recommended to uninstall Test Recorder if you continue to see this issue after updating.
  • Xamarin.iOS 10.0.1.10
    • Release Notes
    • Major Issues Addressed:
      • 44225 – “Error: TrustFailure (CertificateUnknown)” when using Apple TLS handler to access HTTPS servers that use virtual domains (via Server Name Indication).
      • 44073 – VTCompressionSession does not handle null sample buffer
      • 42395 – Build runs indefinitely and never finishes with LLVM enabled
      • 44122 – MTOUCH: error MT2001: Could not link assemblies. Reason: Value cannot be null.
      • (Updated) 42443 – ServicePointTest (System) test crash on tvOS device
  • Xamarin.Android 7.0.1.3
    • Release Notes
    • Major Issues Addressed:
      • 43883 – Android Support v7 AppCompat Binding Generator error with Android N preview (API Level 24)
      • 39859 – Xamarin.Android apps on the Samsung Galaxy S7 fails to start with the error System.ExecutionEngineException SIGILL
      • 43411 – HTTP Bad Request (400) when encoding space (%20) in URL with AndroidClientHandler
      • 44268 – “Unexpected libzip error: Inval” when building projects that reference any of the Android Support Libraries on Windows if the user name contains any accented characters.
      • 44448 – Urban Airship component causes native crash in Mono
      • 44184 – “The “BuildApk” task failed unexpectedly. Xamarin.Tools.Zip.ZipException: Entry has been changed” when attempting to archive or deploy apps in certain environments.
  • Mono Framework 4.6.1.5
    • Release Notes
    • Major Issues Addressed:
      • 44402 – “Cannot implicitly convert type `int[]’ to `System.Collections.IEnumerable'” and “Type `System.Array’ does not contain a member `OfType’ and the best extension method overload … requires an instance of type `System.Collections.IEnumerable'”.
      • 43655 – User is not able to open ‘API Documentation’ in XS on Mac.
      • (Updated) 44708 – “TrustFailure (The authentication or decryption has failed.) … Invalid certificate received from server.” with “Error code: 0x5” or “Error code: 0xffffffff800b010f” when attempting to access HTTPS servers on ports other than 443

Updating and downgrading
You can install this new version by checking for updates on the Stable updater channel.
You can downgrade back to the previous Cycle 8 (September 13, 2016) versions by manually reinstalling each old package. See the KB article on downgrading. If you would prefer an email with any older installer links you need, feel free to write to contact@xamarin.com to request the older versions.

  • For Mac you’ll need: Xamarin Studio, Xamarin.iOS, Xamarin.Android, and Mono.
  • For Windows you’ll need: Xamarin.VisualStudio (from either the Xamarin.Android or Xamarin.iOS drop-down menu), and optionally Xamarin Studio.

Older Mono package versions are not currently listed on https://store.xamarin.com/account/my/subscription/downloads. The Mono package for the previous Stable version (from September 13) is available here:


Upcoming Release Dates

Beta – Sept. 23rd, 2016

Stable – Sept. 26th, 2016

Updated Stable – This Release!

 

(UPDATED) Beta Preview: Cycle 8 Service Release 0

Update – Xamarin.VS and Xamarin.Android packages have been updated to address issues 44591 and 44184 respectively. 

  • XamarinVS 4.2.0.688 -> 4.2.0.694
  • Xamarin.Android 7.0.1.0 -> 7.0.1.1

We are releasing a Beta preview of our next service release, called Cycle 8 Service Release 0 (or C8SR0). As this is a Beta build, there are some known issues and the possibility of new issues being found during testing.

The Xamarin team is looking for as much user feedback as possible on these Beta versions. If you see a behavior that looks suspicious in these versions, and if it isn’t clear whether one of the known issues in the release notes matches the problem, please file a quick bug report.


Known Issues 

  • [Xamarin.Android]44268 – “Unexpected libzip error: Inval” when building projects that reference any of the Android Support Libraries on Windows if the user name contains any accented characters.
    • Temporary workaround: Create and log in with a Windows user account that has only ASCII letters in the user name.
    • Alternate workaround: Add a XAMARIN_CACHEPATH environment variable under Control Panel > System > Advanced system settings > Environment Variables, and set it to a path that uses only ASCII letters in the directory names.
  • [Xamarin for Visual Studio] 44460 – “The “ResolveLibraryProjectImports” task failed unexpectedly” due to file handles being held too long: “Access to the path … C:\…\library_project_imports … is denied”.

Products Released

  • Xamarin Studio 6.1.1.15
    • Major Issues Addressed:
      • 42376 – Crash while loading certain solutions due to incorrect absolute path calculation
      • 43566 (via 44373) – The iOS Designer initialization process will cause any running iOS 10 simulator to become non-responsive.
      • 43655 – Cannot open ‘API Documentation’ in XS on Mac.
      • 43675 – New “run configurations” menu causes most of the emulator name to be cut off
      • 44021 – No way to set sticker icons source in iMessage extension
      • 44128 – Crash when closing designer window and changing API level
      • 44190 – iOS and tvOS Broadcast UI/Upload extension fails to build
      • 44282 – iOS and tvOS Broken Broadcast UI template
      • 44283 – Missing iPhone 7 and Apple Watch Series 2 simulators
      • 44293 – Incorrect target framework profile for new PCL in XS compared to VS
  • Xamarin.VS 4.2.0.694
    • Major Issues Addressed:
      • 44146 – “GetFullVsVersionString must be called on the UI thread” error appears when attempting to open Manage NuGet Packages for Solution, sometimes blocking the use of the NuGet package manager in projects that use Xamarin Components.
      • 43566 (via 44373) – The iOS Designer initialization process will cause any running iOS 10 simulator to become non-responsive.
      • 44482 – Unable to connect VS to mac build host
      • 44508 – Selecting a file via the file browser for “Custom entitlements” deletes the selected file from the file system rather than selecting it
      • 44269 – Android Designer with Custom Controls spins loading bar when x86 Java JDK is set as the active JDK under Tools > Options > Xamarin > Android Settings > Java Development Kit Location.
      • 44357 – Getting ‘codesign’ error when ‘Enable incremental builds’ option is checked in VS and no code signing certificate installed on build host.
      • 44262 – Google Play Publishing wizard fails after client id/secret are entered.
      • 44591 – “Run in Test Cloud” context menu item is missing in VS 2015
  • Xamarin.iOS 10.0.1.5
    • Major Issues Addressed:
      • 44225 – “Error: TrustFailure (CertificateUnknown)” when using Apple TLS handler to access HTTPS servers that use virtual domains (via Server Name Indication).
      • 44075 – VTCompressionSession does not handle null sample buffer
      • 42395 – Build runs indefinitely and never finishes with LLVM enabled
  • Xamarin.Android 7.0.1.1
    • Major Issues Addressed:
      • 43883 – Android Support v7 AppCompat Binding Generator error with Android N preview (API Level 24)
      • 39859 – Xamarin.Android apps on the Samsung Galaxy S7 fails to start with the error System.ExecutionEngineException SIGILL
      • 43411 – HTTP Bad Request (400) when encoding space (%20) in URL with AndroidClientHandler
      • 44448 – Urban Airship component causes native crash in Mono
      • 44184 – “The “BuildApk” task failed unexpectedly. Xamarin.Tools.Zip.ZipException: Entry has been changed” when attempting to archive or deploy apps in certain environments.
  • Xamarin.Mac 2.10.0.102
    • Incorporate Mono framework fixes.
  • Mono Framework 4.6.0.251
    • Major Issues Addressed:
      • 44402 – “Cannot implicitly convert type `int[]’ to `System.Collections.IEnumerable'” and “Type `System.Array’ does not contain a member `OfType’ and the best extension method overload … requires an instance of type `System.Collections.IEnumerable'”.

Installing the Beta and switching back to Stable

You can install this new Beta version or switch back to the current Stable version by changing updater channels.


Upcoming Release Dates

 

Beta – This Release!

Stable – September 2016

Beta Preview 4: Cycle 8

We are releasing the fourth Beta preview of our next major feature release, called Cycle 8. As this is a Beta build, there are some known issues and the possibility of new issues being found during testing.

We anticipate this to be the final preview build before Cycle 8 goes to the Stable channel sometime next week.

The issues addressed below are only the highest severity ones, so please check out the product release notes to see all the fixes and known issues for this preview.

The Xamarin team is looking for as much user feedback as possible on these Cycle 8 Beta versions, especially for the iOS 10 and Xcode 8 features. If you see a behavior that looks suspicious in these versions, and if it isn’t clear whether one of the known issues in the release notes matches the problem, please file a quick bug report.

If you notice an error in this blog post or have trouble downloading one of the installer packages, please let us know in the corresponding forum thread.


Known Issues 

  • [Xamarin Studio]43655 – Cannot open ‘API Documentation’ in XS on Mac.
  • [Xamarin for Visual Studio] – 40767: Collection View and Table View are rendered differently on the iOS designer and the actual simulator
  • [Xamarin.iOS] – 42443 –  ServicePointTest (System) tests crash on tvOS device
  • [Xamarin.Android]44114 – Cannot debug Android app on Android 4.4 device

Products Released

  • Xamarin Studio 6.1.0.5436
    • Release Notes
    • Major Issues Addressed:
      • 42554 – Typing into the search box is corrupting memory and crashing XS
      • 43210 – User is not able to launch an activity by explicitly specifying which activity to launch for Android application in XS
      • 43187 – Quick build/run menu selector does not include run configurations
      • 43949 – Unable to set SDK and NDK path in XS
      • 43888 – Unable to open iOS designer in XS
      • 43678 – Unable to open ‘Create Layout Variation’ window on clicking ‘New Version’ button
      • 44036 – Cannot create new multiplatform projects
  • Xamarin.VS 4.2.0.675
    • Release Notes
    • Major Issues Addressed:
      • 43300 – Intermittent disconnection of VS from Build Host while working with iOS application.
      • 43037 – Unable to install XVS builds.
      • 43602 – “Device Log” window does not open in Visual Studio.
      • 43565 – Visual Studio often hangs (pauses, freezes) during `TastyConfig.DebugLaunch()` on second deployment attempt
      • 43650 – User is not getting simulator for Watckit OS1 application in VS dropdown
      • 43454 – User is not able to run Watch OS1 application with VS, application gets terminated
      • 44046 – Getting build error for iOS/tvOS template
      • 43976 – Can’t open WatchOS interface.storyboard in designer
      • 43884 – Unable to open iOS designer in VS
  • Xamarin.iOS 10.0.0.4
    • Release Notes
    • Major Issues Addressed:
      • 43373 – Unable to upload application to device due to an error “Could not load the framework ‘libswiftos.dylib’ (path: /Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib)” with Xcode8-beta6 update
      • 43837 – Unexpected Error MT0000 when building in Release configuration and targeting a device (not sim)
      • 40936 – iOS app crash when taking snapshots
  • Xamarin.Android 7.0.0.15
    • Release Notes
    • Major Issues Addressed:
      • 43268 – Android application crashes when launched on Android device, when running a project with a service in XS
      • 42646 – Error XA2006: Reference to metadata item ‘Android.Views.DecorCaptionShade’ when attempting to build codegen tests in release
      • 43487 – ‘System.DllNotFoundException: sqlite3’ thrown when trying to use sqlite with Cycle8
      • 42814 – Deploy to Android device fails when setting a breakpoint
  • Mono Framework 4.6.0.243
    • Release Notes
    • Major Issues Addressed:
      • 42864 –  “System.Net.WebException: Error: NameResolutionFailure” on second web request to certain raw IP addresses with HttpClient
      • 43305 – Standard Library dependency error on Xamarin Studio
      • 42408: WebClient.DownloadString returns 401 Unauthorized when using Basic authentication
      • 42938:  Compilation of netstandard PCL library with xbuild fails with… CSC: error CS0518: The predefined type …  is not defined or imported
      • 43636 – “Index was out of range. Must be non-negative and less than the size of the collection” in `System.Collections.Generic.List`1[T].set_Item()` when attempting to compile certain C# code involving tasks, async/await, and try/catch/finally
      • 33475 – Android app crash when taking snapshots

Installing the Beta and switching back to Stable

You can install this new Beta version or switch back to the current Stable version by changing updater channels.


Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – July 27th, 2016

Alpha 4 – Aug 2nd, 2016

Alpha 5– Aug 9th, 2016

Alpha 6 – Aug 12, 2016

Beta 1 – Aug 17th, 2016

Beta 2 – Aug 24th, 2016

Beta 3 – Aug 31st, 2016

Beta 4 – This Release!

Stable – Mid-September 2016

Beta Preview 3: Cycle 8

We are releasing the third Beta preview of our next major feature release, called Cycle 8. As this is a Beta build, there are some known issues and the possibility of new issues being found during testing.

The issues addressed below are only the highest severity ones, so please check out the product release notes to see all the fixes and known issues for this preview.

The Xamarin team is looking for as much user feedback as possible on these Cycle 8 Beta versions, especially for the iOS 10 and Xcode 8 features. If you see a behavior that looks suspicious in these versions, and if it isn’t clear whether one of the known issues in the release notes matches the problem, please file a quick bug report.

If you notice an error in this blog post or have trouble downloading one of the installer packages, please let us know in the corresponding forum thread.


Known Issues 

  • [Mono Framework] – 33475: Android app crashes when taking snapshots
  • [Mono Framework] – 40963: iOS app crashes when taking snapshots
  • [Xamarin for Visual Studio] – 40767: Collection View and Table View are rendered differently on the iOS designer and the actual simulator

Products Released

  • Xamarin Studio 6.1.0.5383
    • Release Notes
    • Major Issues Addressed:
      • 42554 – Typing into the search box is corrupting memory and crashing XS
      • 43210 – User is not able to launch an activity by explicitly specifying which activity to launch for Android application in XS
      • 43187 – Quick build/run menu selector does not include run configurations
  • Xamarin.VS 4.2.0.628
    • Release Notes
    • Major Issues Addressed:
      • 43300 – Intermittent disconnection of VS from Build Host while working with iOS application.
      • 43037 – Unable to install XVS builds.
      • 43602 – “Device Log” window does not open in Visual Studio.
      • 43565 – Visual Studio often hangs (pauses, freezes) during `TastyConfig.DebugLaunch()` on second deployment attempt
      • 43650 – User is not getting simulator for Watckit OS1 application in VS dropdown
      • 43454 – User is not able to run Watch OS1 application with VS, application gets terminated
  • Xamarin.iOS 9.99.5.54
    • Release Notes
    • Major Issues Addressed:
      • 43373 – Unable to upload application to device due to an error “Could not load the framework ‘libswiftos.dylib’ (path: /Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib)” with Xcode8-beta6 update
  • Xamarin.Android 7.0.0.3
    • Release Notes
    • Major Issues Addressed:
      • 43268 – Android application crashes when launched on Android device, when running a project with a service in XS
      • 42646 – Error XA2006: Reference to metadata item ‘Android.Views.DecorCaptionShade’ when attempting to build codegen tests in release
      • 43487 – ‘System.DllNotFoundException: sqlite3’ thrown when trying to use sqlite with Cycle8
      • 42814 – Deploy to Android device fails when setting a breakpoint
  • Mono Framework 4.6.0.182
    • Release Notes
    • Major Issues Addressed:
      • 42864 –  “System.Net.WebException: Error: NameResolutionFailure” on second web request to certain raw IP addresses with HttpClient
      • 43305 – Standard Library dependency error on Xamarin Studio
      • 42408: WebClient.DownloadString returns 401 Unauthorized when using Basic authentication
      • 42938:  Compilation of netstandard PCL library with xbuild fails with… CSC: error CS0518: The predefined type …  is not defined or imported
      • 43636 – “Index was out of range. Must be non-negative and less than the size of the collection” in `System.Collections.Generic.List`1[T].set_Item()` when attempting to compile certain C# code involving tasks, async/await, and try/catch/finally

Installing the Beta and switching back to Stable

You can install this new Beta version or switch back to the current Stable version by changing updater channels.


Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – July 27th, 2016

Alpha 4 – Aug 2nd, 2016

Alpha 5– Aug 9th, 2016

Alpha 6 – Aug 12, 2016

Beta 1 – Aug 17th, 2016

Beta 2 – Aug 24th, 2016

Beta 3 – This Release!

Stable – Fall 2016

Beta Preview 2: Cycle 8

We are releasing the second Beta preview of our next major feature release, called Cycle 8. As this is a Beta build, there are some known issues and the possibility of new issues being found during testing.

The issues addressed below are only the highest severity ones, so please check out the product release notes to see all the fixes and known issues for this preview.

The Xamarin team is looking for as much user feedback as possible on these Cycle 8 Beta versions, especially for the iOS 10 and Xcode 8 features. If you see a behavior that looks suspicious in these versions, and if it isn’t clear whether one of the known issues in the release notes matches the problem, please file a quick bug report.

If you notice an error in this blog post or have trouble downloading one of the installer packages, please let us know in the corresponding forum thread.


Known Issues 

  • [Mono Framework] – 42408: WebClient.DownloadString returns 401 Unauthorized when using Basic authentication
  • [Mono Framework] – 33475: Android app crashes when taking snapshots
  • [Mono Framework] – 40963: iOS app crashes when taking snapshots
  • [Mono Framework] – 42938:  Compilation of netstandard PCL library with xbuild fails with… CSC: error CS0518: The predefined type …  is not defined or imported
  • [Xamarin.iOS] – 42392:  ‘clang: error: unable to execute command: Segmentation fault: 11’ when compiling iOS project
  • [Xamarin for Visual Studio] – 40767: Collection View and Table View are rendered differently on the iOS designer and the actual simulator

Products Released

  • Xamarin Studio 6.1.0.5365
    • Release Notes
    • Major Issues Addressed:
      • 42554 – Typing into the search box is corrupting memory and crashing XS
      • 43210 – User is not able to launch an activity by explicitly specifying which activity to launch for Android application in XS
      • 43187 – Quick build/run menu selector does not include run configurations
  • Xamarin.VS 4.2.0.584
    • Release Notes
    • Major Issues Addressed:
      • 43300 – Intermittent disconnection of VS from Build Host while working with iOS application.
      • 43037 – Unable to install XVS builds.
      • 43602 – “Device Log” window does not open in Visual Studio.
  • Xamarin.iOS 9.99.4.23
    • Release Notes
    • Major Issues Addressed:
      • 43373 – Unable to upload application to device due to an error “Could not load the framework ‘libswiftos.dylib’ (path: /Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib)” with Xcode8-beta6 update
  • Xamarin.Android 6.2.0.47
    • Release Notes
    • Major Issues Addressed:
      • 43268 – Android application crashes when launched on Android device, when running a project with a service in XS
      • 42646 – Error XA2006: Reference to metadata item ‘Android.Views.DecorCaptionShade’ when attempting to build codegen tests in release
  • Mono Framework 4.6.0.165
    • Release Notes
    • Major Issues Addressed:
      • 42864 –  “System.Net.WebException: Error: NameResolutionFailure” on second web request to certain raw IP addresses with HttpClient
      • 43305 – Standard Library dependency error on Xamarin Studio

Installing the Beta and switching back to Stable

You can install this new Beta version or switch back to the current Stable version by changing updater channels.


Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – July 27th, 2016

Alpha 4 – Aug 2nd, 2016

Alpha 5– Aug 9th, 2016

Alpha 6 – Aug 12, 2016

Beta 1 – Aug 17th, 2016

Beta 2 – This Release!

Stable – Fall 2016

Beta Preview 1: Cycle 8

We are releasing the first Beta preview of our next major feature release, called Cycle 8. As this is a Beta build, there are some known issues and the possibility of new issues being found during testing.

The issues addressed below are only the highest severity ones, so please check out the product release notes to see all the fixes and known issues for this preview.

The Xamarin team is looking for as much user feedback as possible on these Cycle 8 Beta versions, especially for the iOS 10 and Xcode 8 features. If you see a behavior that looks suspicious in these versions, and if it isn’t clear whether one of the known issues in the release notes matches the problem, please file a quick bug report.

If you notice an error in this blog post or have trouble downloading one of the installer packages, please let us know in the corresponding forum thread.


Known Issues 

  • [Mono Framework] – 42408: WebClient.DownloadString returns 401 Unauthorized when using Basic authentication
  • [Mono Framework] – 33475: Android app crashes when taking snapshots
  • [Mono Framework] – 40963: iOS app crashes when taking snapshots
  • [Mono Framework] – 42938:  Compilation of netstandard PCL library with xbuild fails with… CSC: error CS0518: The predefined type …  is not defined or imported
  • [Xamarin.iOS] – 42392:  ‘clang: error: unable to execute command: Segmentation fault: 11’ when compiling iOS project
  • [Xamarin for Visual Studio] – 40767: Collection View and Table View are rendered differently on the iOS designer and the actual simulator

Products Released

  • Xamarin Studio 6.1.0.5345
    • Release Notes
    • Major Issues Addressed:
      • 42554 – Typing into the search box is corrupting memory and crashing XS
      • 43210 – User is not able to launch an activity by explicitly specifying which activity to launch for Android application in XS
      • 43187 – quick build/run menu selector does not include run configurations
  • Xamarin.iOS 9.99.3.8
    • Release Notes
    • Major Issues Addressed:
      • 43373 – Unable to upload application to device due to an error “Could not load the framework ‘libswiftos.dylib’ (path: /Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib)” with Xcode8-beta6 update
  • Xamarin.Android 6.2.0.36
    • Release Notes
    • Major Issues Addressed:
      • 43268 – Android application crashes when launched on Android device, when running a project with a service in XS
      • 42646 – Error XA2006: Reference to metadata item ‘Android.Views.DecorCaptionShade’ when attempting to build codegen tests in release
  • Mono Framework 4.6.0.150
    • Release Notes
    • Major Issues Addressed:
      • 42864 –  “System.Net.WebException: Error: NameResolutionFailure” on second web request to certain raw IP addresses with HttpClient
      • 43305 – Standard Library dependency error on Xamarin Studio

Installing the Beta and switching back to Stable

You can install this new Beta version or switch back to the current Stable version by changing updater channels.


Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – July 27th, 2016

Alpha 4 – Aug 2nd, 2016

Alpha 5– Aug 9th, 2016

Alpha 6 – August 12, 2016

Beta 1 – This Release!

Stable – Fall 2016

Alpha Preview 6: Cycle 8

We are releasing a newer Alpha preview of our next major feature release, called Cycle 8. As this is an Alpha build, there are some known issues and the possibility of new issues being found during testing.

NOTE Due to a last minute issue found during testing, Xamarin.VS will not be included with this release. We hope to have an updated Xamarin.VS build early next week to compliment the other products in this release. 

The issues addressed below are only the highest severity ones, so please check out the product release notes to see all the fixes and known issues for this preview. Use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.


Known Issues (does not included Xamairn.VS known issues) 

  • [Xamarin Studio] 40422: The roslyn workspace can’t be queried while it’s loading.
  • [Xamairn.iOS]42392: ‘clang: error: unable to execute command: Segmentation fault: 11’ when compiling ios project
  • [Xamarin.iOS] 42992 – Loose debugger connection

Products Released

  • Xamarin Studio 6.1.0.5338
    • Release Notes
    • Forum Thread – Alpha Release: Cycle 8 Feature Release Preview
    • Major Issues Addressed:
      • 42728 – watchOS apps in Xamarin Studio should now properly deploy on device and simulator.
      • 42389 – Constant spinwheels / hangs when editing, scrolling, or searching in the document editor with a large solution using XS 6.1
      • 43013 – Cannot create a Multiplatform Single View App
      • 43168 – Getting error in Android Previewer even after building or rebuilding the project.
      • 40442 – The roslyn workspace can’t be queried while it’s loading.
  • Xamarin.Android 6.2.0.33
    • Release Notes
    • Forum Thread – Alpha Release: Cycle 8 Feature Release Preview
    • Major Issues Addressed:
      • 42168 –  A numeric comparison was attempted on “$(_DeviceSdkVersion)” that evaluates to “” instead of a number, in condition “$(_DeviceSdkVersion) >= 21”
      • 42521 –  Applications crashing on startup due to java.io.IOException: No original dex files found
      • 42469 – Fixed assertion “fixed_type_allocator_indexes [type] == slot’ not met”, which was causing a crash on startup.
      • 42835 – Android projects using support packages should now build properly on Windows.
      • 42830 – Android applications should now deploy properly in release configuration.
  • Mono Framework 4.6.0.138
    • Release Notes
    • Major Issues Addressed:
      • 41644 – Fixed a hang on shutdown.
      • 41674  MSBuild should now work correctly.

Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – July 27th, 2016

Alpha 4 – Aug 2nd, 2016

Alpha 5– Aug 9th, 2016

Alpha 6 – This Release!

Stable – Fall 2016

Preview: iOS 10 / Xcode 8 / Sierra Support Update 2

We are releasing a new set of preview builds with support for Xcode 8, iOS 10, watchOS3, tvOS 10, and MacOS Sierra. Be sure to check out the supporting documentation on all these products as well. 

NOTE – These builds have been tested against Xcode beta 3 and beta 4. 

There is no target stable date final iOS 10 support at this time, as we have to wait until Apple finalizes and publishes their support before we can release ours. That being said, we may do additional preview releases between now and the final Apple release, so be sure to check back and see if newer versions become available in the coming months.

As with all our preview releases, this is not a product we officially support. If you encounter any issues, we recommend filing a bug in Bugzilla. You can also jump into the discussions on the forum thread posted below.


Known Issues 

  • [Xamarin Studio] 42969 – XS device support does not work with simulators or devices with Xcode 8 beta 4.
    • Workaround – Device support can be enabled as noted in comment 5 of the above linked bug.
  • [Xamarin Studio] – 42568 – WatchInterface.storyboard fails to load
  • [Xamarin Studio / Xamarin.VS] 41554 – Debugging on watchOS device/simulator is not supported on these builds.
  • [Xamarin.VS]43097 – watchOS simulator support is not available on this build.
  • [Xamarin.VS]43083 – watchOS apps launch in default mode when executed in notification mode from XS or VS.
  • [Xamarin.iOS] 43102 – Crossplatform application failed to launch on iOS device due to an error ” dyld: Library not loaded: @executable_path/libxamarin-debug.dylib

Products Released

  • Xamarin Studio 6.1.0.5235 [Download]
  • Issues Addressed:
    • 41329 – You will need to  disable, then enable, the ‘Show app on apple watch’ option on iPhone to install WatchKit app on watch device.
  • Xamarin for Visual Studio 99.0.0.3298 [Download]
  • Issues Addressed:
    • 42573 – watchOS projects will not build in Visual Studio with debug device configuration
    • 42647: The Designer is not supported for Visual Studio in this preview.