Category Archives: Alpha

Releases specifically targeted for the Alpha Updater Channel.

Alpha Preview – Cycle 6 Service Release 0

 We are releasing an Alpha preview of our first Service Release to Cycle 6. This is smaller release, meant to quickly address some of the most commonly reported issues we’ve seen from the community after the release of Cycle 6.

Please use the below forum threads to report and monitor issues that may occur, and find any potential workarounds that may exist.


Known Issues

**NOTE** – For any hangs observed in Xamarin.VS, please follow the steps here to collect the call stack of the Main Thread. If the call stack does not include “GetAdditionalResourcesFromAssemblies”, please attach it to a new bug report. This will aid us in investigating these fixes, hopefully speeding up the release of patches to address them. 

  • [Xamarin.VS (36185)] – Hang (GUI lockup, freeze) when opening or working on a solution that contains an Android project. Known temporary workaround: delete the hidden .suo file or .vs folder in the solution directory.
  • [Xamarin.VS] – Error ‘Disallowed path(“iTuneMetadata.plist”) found’ on .ipa uploads preventing submission to App Store.
  • [Xamarin Studio/Xamarin.iOS] -Archiving for Publishing generates the wrong value for CloudKit entitlement, thus preventing distribution.

Products Released

  • Xamarin Studio 5.10.1.1
    • Release Notes
    • Forum Thread – Alpha Release: Xamarin 4, Cycle 6 – Service Release 0
    • Issues Addressed:
      • Fixed an issue with the iOS Designer where some xib files would not open. (“This File Format is not supported”)
      • Fixed an issue with the iOS Designer where iOS versions 9.0 or higher would throw an exception when translatesAutoresizingMaskIntoConstraints=NO in some widgets. (“One or more errors occurred… at Parse <uknown offset> … at LoadXmlCore <uknown offset>”)
      • Fixed an issue with the iOS Designer where the z-order was not rendering correctly with Storyboards
  • Xamarin for Visual Studio 4.0.0.1694
    • Release Notes
    • Forum Thread – Alpha Release: Xamarin 4, Cycle 6 – Service Release 0
    • Issues Addressed:
      • 35859 – Fixed an error “vs0192Ø is an invalid ClientId. It must contain only numbers and letters” when attempting to connect to the Mac build host if the Windows user directory contains accented (non-ASCII) characters.
      • 36190 – Fixed an error “Could not write lines to file “obj\Debug\MyLib.csproj.FileListAbsolute.txt”” when building moderately large PCL projects as part of an iOS or Android app.
      • Added an explicit error message “Building from a network share path is not supported at the moment” when attempting to build from an unmapped network share folder on Windows (any path beginning with \\). This is a change to help clarify certain causes of “The “UnpackLibraryResources” task failed unexpectedly”. In its current form, this change will block any attempt to build on a network share that has not been mapped to a drive letter or local folder. This strict rule might be loosened again in the future.

Upcoming Release Dates

Alpha – This release!

Beta – Late November / Early December 2015

Stable – December 2015

Alpha Release: Cycle 6 Preview Update – Release Candidate 1

We are releasing a updated preview of Cycle 6 to the Alpha channel. These updated RCs provide a slew of additional fixes on top of the previous builds, in addition to support for Xcode 7.1. There are still some issues remaining, but the quality is much improved since the initial RC, thanks in great part to community input. Thank you!

If you are used to the updater channels in Xamarin Studio and/or Visual Studio, simply switching to the Alpha channel and getting the latest content will give you the RC1 series of builds. To make it as easy as possible for Xamarin developers to participate in this first RC, we’ve also prepared special versions of our installers which will install the new RC1 build on your Mac and Windows machine if nothing has been previously installed. (Note – if you have gotten web previews of newer Xamarin Platform builds, the installer will not update and you should use the updater in the IDE against the Alpha channel).

Mac Installer  |  Windows Installer

Please note, to use RC1 to develop iOS applications in Visual Studio, you’ll need to install the release on both your Mac and Windows workstations.

The biggest change with the Cycle 6 builds is an overhaul of how Xamarin builds iOS projects on your Mac from Visual Studio. If you happen to experience issues with any of the RC1 products, please log a bug report


Known Issues

  • [Xamarin Studio] – gtk may crash during drag and drop actions.
  • [Xamarin Studio] – Xamarin Studio shows pop up error on creating iOS template projects.
  • [Xamarin Studio] – Holding down Command+Z batches undo actions. (Undo is not executed until key combination is released.)
  • [Xamarin Studio] – iOS extension projects do not compile.
  • [Xamarin Studio] – Adding a new Action to a Controller does not update corresponding *.design.cs file
  • [Xamarin.VS] – Certain iOS projects may have increased build times.
  • [Xamarin.VS] – In some scenarios, iOS applications install, but do not launch from Visual Studio, you must tap on the application manually to launch.
  • [Xamarin.VS/Xamarin.iOS] – Debugger does not stop on breakpoints in async RelayCommand in PCL projects
  • [Xamarin.Mac] – NSOutlineViewDelegate is missing one exported method, leading to applications not displaying contents for the cells.

Products Released


Cycle 6 Release Dates

  • Alpha – August 26th, 2015
  • Alpha 2 – September 2nd, 2015
  • Alpha 3 – September 19th, 2015
  • Alpha 4 – September 24th, 2015
  • RC0 / Alpha 5 – October 6th, 2015
  • RC1 / Alpha 6 – This release!
  • Future RC(s) – October/November 2015
  • Stable – Fall 2015

Alpha Release: Cycle 6 – 5th Alpha Preview / Release Candidate 0

We are releasing a new preview of Cycle 6 to the Alpha channel. This series of builds will be the next major feature release of the Xamarin Platform when they release to Stable later this year. These builds are also the first Release Candidate we are publishing as part of a newly launched RC process, which you can read more about here.

If you are used to the updater channels in Xamarin Studio and/or Visual Studio, simply switching to the Alpha channel and getting the latest content will give you the RC0 series of builds. To make it as easy as possible for Xamarin developers to participate in this first RC, we’ve also prepared special versions of our installers which will install the new RC0 build on your Mac and Windows machine.

Mac Installer  |  Windows Installer

Please note, to use RC0 to develop iOS applications in Visual Studio, you’ll need to install the release on both your Mac and Windows workstations.

The biggest change with the Cycle 6 builds is an overhaul of how Xamarin builds iOS projects on your Mac from Visual Studio. If you happen to experience issues with any of the RC0 products, please log a bug report


Known Issues 

  • [Xamarin.VS] – Xamarin.VS fails to log into build server on Mac machines using El Capitan GM (beta 1). 
  • [Xamarin.VS] – Right clicking build host in XMA connection dialog does not successfully open context menu.
  • [Xamarin.VS] – Breakpoint positions sometimes change when debugging Android applications with multiple breakpoints. 
  • [Xamarin.VS] – When deleting a theme with the Android Designer, it sometimes does not properly remove it. Applying the theme again may cause Visual Studio to hang/restart. 
  • [Xamarin.VS] – In some instances, the license window cannot be dismissed. 

Products Released


Upcoming Release Dates

Alpha – August 26th, 2015

Alpha 2 – September 2nd, 2015

Alpha 3 – September 19th, 2015

Alpha 4 – September 24th, 2015

RC0 / Alpha 5 – Today!

Future RC(s) – October/November 2015

Stable – Fall 2015

Alpha Release: Cycle 6 – 4th Alpha Preview

We are releasing a new preview of Cycle 6 to the Alpha channel. This series of builds will be the next major feature release of the Xamarin Platform when they release to Stable later this year. We wanted to release these builds to a wider audience for consumption via the Alpha channel.

As this is an Alpha release there are bound to be bugs. Please make sure to use the forums below to read up on issues as they are found, and see if any workarounds exist, or log a bug if one doesn’t exist already.


Important Notes

  • [Xamarin Studio / Xamarin.VS] – The Cycle 6 builds now require Xcode 7 or higher. For example, attempting to build an iOS app for device using Xcode 6.4 will now fail with “Native linking failed, undefined symbol:___divdc3”.
  • [Xamarin.VS] – Support for OS X 10.9 Mavericks has been deprecated. The Cycle 6 builds will now require OS X 10.10 Yosemite.

Known Issues 

  • [Xamarin.VS] – Exception when opening interface.storyboard file for a WatchKit project in Visual Studio, when using Xcode7.

Products Released


Upcoming Release Dates

Alpha – August 26th, 2015

Alpha 2 – September 2nd, 2015

Alpha 3 – September 19th, 2015

Alpha 4 – Today!

Beta – September / October 2015

Stable – Fall 2015

Alpha Release: Cycle 6 – 3rd Alpha Preview

We are releasing a new preview of Cycle 6 to the Alpha channel. This series of builds will be the next major feature release of the Xamarin Platform when they release to Stable later this year. We wanted to release these builds to a wider audience for consumption via the Alpha channel.

As this is an Alpha release there are bound to be bugs. Please make sure to use the forums below to read up on issues as they are found, and see if any workarounds exist, or log a bug if one doesn’t exist already.


Known Issues 

  • [Xamarin.VS] – When using Visual Studio with OSX Mavericks, iOS Applications on iOS devices will not run, resulting in an error message. These applications work fine with OSX Yosemite.

Products Released


Upcoming Release Dates

Alpha – August 26th, 2015

Alpha 2 – September 2nd, 2015

Alpha 3 – Today!

Beta – September / October 2015

Stable – Fall 2015

Alpha Release: Cycle 6 – 2nd Alpha Preview

We are releasing a new preview of Cycle 6 to the Alpha channel. This series of builds will be the next major feature release of the Xamarin Platform when they release to Stable later this year. We wanted to release these builds to a wider audience for consumption via the Alpha channel. If you are looking for the iOS 9 preview, you can find that here.

As this is an Alpha release there are bound to be bugs. Please make sure to use the forums below to read up on issues as they are found, and see if any workarounds exist, or log a bug if one doesn’t exist already. 


Known Issues 

  • [Xamarin.VS] – Android applications will not run on device for the 1st attempt. Re-running the same application successive times will successfully deploy it on device.
  • [Xamarin.VS] – When using Visual Studio with OSX Mavericks, iOS Applications on iOS devices will not run, resulting in an error message. These applications work fine with OSX Yosemite.

Products Released


Upcoming Release Dates

Alpha – August 26th, 2015

Alpha 2 – Today!

Beta – September / October 2015

Stable – Fall 2015

Alpha Release: Cycle 6

We are releasing a preview of a future stable release, dubbed Cycle 6 to the Alpha channel. This series of builds will be the next major feature release of the Xamarin Platform when these builds release to Stable later this year. We wanted to release these build to a wider audience for consumption via the Alpha channel. If you are looking for the iOS 9 preview, you can find that here.

As this is the first Alpha release of a major feature update, there are bound to be bugs. Please make sure to use the forums below to read up on issues as they are found, and see if any workarounds exist. Additionally, please note that this first release does not have a compatible Xamarin.VS build, thus there will be a temporary break between Xamarin.VS and Xamarin.iOS if you are on the Alpha channel. We are working to fix a blocking issue with the Xamairn.VS product, and should be doing an updated Alpha build for that very soon.


Known Issues 

  • [Xamarin Studio] – Xamarin Studio Windows build is not available with this release. This will be provided during the next Cycle 6 Alpha update.
  • [Xamarin.VS] – Xamarin.VS will be incompatible with Xamarin.iOS 8.13.0 for the time being. We will be putting out an updated VS to the Alpha channel soon which will restore compatibility.

Products Released


Upcoming Release Dates

Alpha – Today!

Beta – September / October 2015

Stable – Fall 2015

2nd Alpha Release: Cycle 5 – Service Release 3

We are releasing an updated preview of our next upcoming stable release, dubbed Cycle 5 – Service Release 3, to the Alpha channel. These builds contain additional patches that were not included in the previous alpha.

As this is an Alpha preview, there are still some known issues to be aware of. These are regressions not against the current stable, but against the previous Alpha release. We’re looking to have these fixed in an upcoming preview, but felt they were not severe enough to hold back an Alpha containing fixes people may be waiting on.


Known Issues 

  • [Xamarin Studio] – Support for projects created with VS 2015 is not included in this build.
  • [Xamarin.iOS] – Xamarin.Forms iOS applications may crash when launching to simulator in release mode.
  • [Xamarin.Android] – API-22 binding is not complete in this build.

Products Released

  • Xamarin.iOS 8.10.4.27
    • Release Notes
    • Forum Thread – Alpha Release: Xamarin.iOS 8.10.4, Cycle 5 – Service Release 3
    • Issues Addressed
      • 26699 – Fixed an issue with AOT assemblies not working correctly with CocosSharp projects .
      • 31846 – Fixed errors caused by casting nfloat to float when using the AOT compiler option –aot-options=-O=float3.
      • 29615 – Fixed an issue with the linker for XML files when using no LLVM.
      • 31582 – Fixed a failure occurring for some operations on ARM7.
  • Mono Framework MDK 4.0.3.19
    • Release Notes
    • Issues Addressed:
      • 30043 – Fixed an exception caused by calling Dispose on FileSystemWatcher.
      • 26205 – Fixed a null reference for some NuGet packages with PCLs generated on Windows.
      • 30929 – Fixed issue with files missing from source distribution.

Upcoming Release Dates

Alpha – July 17th, 2015.

Alpha 2 – July 23rd, 2015.

Beta – Late July

Stable – End of July / Early August

Alpha Release: Cycle 5 – Service Release 3

We are releasing a preview of our next upcoming stable release, dubbed Cycle 5 – Service Release 3, to the Alpha channel. These builds contain a number of additional fixes on top of our current stable products, and we’re looking to get them into the Stable channel later this month if all goes well.

As this is an Alpha preview, there are still some known issues to be aware of. These are regressions against the previous stable release of Cycle 5 – Service Release 2. We’re looking to have these fixed in an upcoming preview, but felt they were not severe enough to hold back an Alpha containing lots of fixes people may be waiting on.


Known Issues 

  • [Xamarin.VS] – VS may hang when deploying a WatchKit application on simulator.

Products Released

  • Xamarin for Visual Studio 3.11.785
    • Release Notes
    • Forum Thread – Alpha Release: XamarinVS 3.11.785, Cycle 5 – Service Release 3
    • Issues Addressed:
      • 31009 – Fixed an issue where the build host would get disconnected due to an exception.
      • 26709 – Fixed an issue with Nuget installs not using latest Google Play Services version when creating projects with Xamarin Android libraries.
      • Fixed an issue where change to installation folder for Xamarin Android Player caused it to not show up with Xamarin.VS.
      • 29398 – Fixed an issue where the Xamarin.VisualStudio.iOS.Documents process would hold an open reference to the project folder after VS had exited.
  • Xamarin.Android 5.1.5.2
    • Release Notes
    • Forum Thread – Alpha Release: Xamarin.Android 5.1.5, Cycle 5 – Service Release 3
    • Issues Addressed
      • 31527 – Fixed an issue where System.Runtime was not able to load correctly in projects with both Shared Runtime and Link SDK enabled.
      • 28114 – Fixed a crash caused by overriding Keyboard.CreateKeyFromXml.
      • 30823 – Fixed AOT task failure when linker is set to “don’t link”.
  • Mono Framework MDK 4.0.3.13
    • Release Notes
    • Issues Addressed:
      • 30868 – Fixed an issue with exceptions occurring when using certain versions of Mono.
      • 29823 – Fixed an issue which broke SqlConnectionBuilder after migrating to System.Data in Mono 4.0.0 or later.
      • 29571 – Fixed mismatching behavior between Mono and .NET for null comparison values.

Upcoming Release Dates

Alpha – July 17th, 2015.

Beta – Late July

Stable – End of July / Early August

Alpha Release: Cycle 5 – Service Release 2

We are releasing a preview of our next upcoming stable release, dubbed Cycle 5 – Service Release 2, to the Alpha channel. These builds contain a number of additional fixes on top of our current stable products, and we’re looking to get them into the Stable channel later this month if all goes well.

As this is an Alpha preview, there are still some known issues to be aware of. These are regressions against the previous stable release of Cycle 5 – Service Release 1. We’re looking to have these fixed in an upcoming preview, but felt they were not severe enough to hold back an Alpha containing lots of fixes people may be waiting on.


Known Issues 

  • [Xamarin.VS] – Running a WatchKit app a second time causes an error.
  • [Xamarin.VS] – Deploying an Android application a second time on other emulators or devices fails and causes an error.
  • [Xamarin.Android] – Error when building with Supportv7/Pallete sample.
  • [Xamarin.Android] – profile.mlpd file is not correctly created when using command line profiler.
  • [Xamarin.Android] – When running most unit test apps that have been compiled with AOT on x86 devices, you may see an assertion failure.

Products Released

  • Xamarin Studio 5.9.4.5
    • Release Notes
    • Forum Thread – Alpha Release: Xamarin Studio 5.9.4, Cycle 5 – Service Release 2
    • Issues Addressed:
      • 29228 – Fixed an issue where the Component Store would not accurately reflect install status.
      • 29583 – Fixed an issue where archives would not show up.
      • 29614 – Fixed an issue where there was no valid iOS code signing keys being found in keychain.
      • 29725 – Fixed an issue where expressions in the Watch window were cleared each time debugging was stopped.
      • 30070 – Fixed an issue where you could not type in the search box.
  • Xamarin for Visual Studio 3.11.658
    • Release Notes
    • Forum Thread – Alpha Release: XamarinVS 3.11.658, Cycle 5 – Service Release 2
    • Issues Addressed:
      • 28934 – Fixed an issue where UITest project solutions were not working correctly with VS 2010.
      • 29148 – Fixed an issue where “Bundle Assemblies into Native Code” checkbox was not correctly updating its status when using fast deployment.
      • 29849 – Fixed an issue with Forms iOS projects causing errors due to adding Entitlements.plist
      • 30235 – Clarified the wording of a licensing message when using Xamarin Indie Edition to connect VS
      • 30371 – Fixed an issue where default values for certain project properties were displaying incorrectly if they were not explicitly specified.
  • Xamarin.iOS 8.10.2.17
    • Release Notes
    • Forum Thread – Alpha Release: Xamarin.iOS 8.10.2, Cycle 5 – Service Release 2
    • Issues Addressed:
      • 28739 – Fixed a crash related to AddressBook.ABPerson.GetEmails().
      • 28961 – Fixed an AOT error found when upgrading to the Unified API.
      • 29211 – Fixed a runtime error caused when Enabling linker with Profile 7 PCL using System.IO.Compression
      • 29579 – Fixed an issue with Info.plist not being found.
      • 29846 – Fixed a debugger crash when attempting to expand SKFieldNode in Locals view.
      • 29885 – Fixed an issue with Darwin Notifications not working correctly.
      • 30177 – Fixed an issue with Argument 8 delegate getting lost on 64-bit ARM targets.
      • 30698 – Fixed a build failure when performing float or nfloat calculations on builds who’s AOT option is set to float32.
  • Mono Framework MDK 4.0.2.4
    • Release Notes
    • Issues Addressed:
      • 29639 – Fixed an issue where some unit tests failed to run with RemoteException: Unix transport error when executing them with nUnit 2.4.8.
      • 29898 – Bumped Mono Nuget to 2.8.5 to address issues when trying to use ProGet for private repositories.
      • 29935 – Fixed an issue where XAttribute.ToString() would output incorrectly if the attribute contains namespace.

Upcoming Release Dates

Alpha – Today!

Beta – Mid June

Stable – Late June