This thread has now been closed to direct all further updates about this service release onto the new Stable release thread:
Date published: See https://releases.xamarin.com/.
NOTE: Beta versions have not yet completed the full suite of tests by the Xamarin QA team. That said, customer reports of any regressions (or bugs that are incorrectly marked fixed) are still much appreciated, even if the problem would have eventually been caught during the full QA testing process.
You can downgrade back to the current Stable version by switching updater channels.
If needed, you can downgrade back to older versions (from before April 29) by manually reinstalling each old package. See the "Previous versions, downgrading" section on the previous Stable release thread for the older downgrade links.
This first post will be updated regularly.
Hopefully this thread will help answer "what might break if I update to this release?"
If you find a new problem that is specific to this version, please file a bug report.
Please discuss older bugs that are unchanged in this release compared to the previous Stable version in Bugzilla instead.
Of course for questions and discussions about topics other than bugs, feel free start new forum threads.
Bug 28961 - [iOS] "error MT3001: Could not AOT the assembly", "error: invalid symbol redefinition". (This can also appear as "System.ArgumentOutOfRangeException: startIndex > this.length" in the "Output -> Xamarin Log" in VS.) One common cause of this error is the use of
[MethodImplAttribute(MethodImplOptions.Synchronized)]. Workaround for projects that use [MethodImplAttribute(MethodImplOptions.Synchronized)]: remove
[MethodImplAttribute(MethodImplOptions.Synchronized)] and manually synchronize the methods using
lock statements instead (https://bugzilla.xamarin.com/show_bug.cgi?id=28961#c6).
Non-public Bug 28995 - [Android] On certain devices, certain apps crash frequently due to "System.ExecutionEngineException: SIGILL".
Bug 30318 - [Android] Windows only: Breakpoints in PCL projects do not work after cleaning solution, redeploying, and restarting debugging. Partial workaround: delete all the
bin folders in the solution after cleaning. (The next Alpha build should include this fix.)
Non-public Bug 30057 - [Android] Windows only: the debugger will not be able resolve breakpoints unless "Shared Runtime" is ON and the Linker is OFF (under "Project Properties -> Android Options" in Visual Studio or "Project Options -> Android Build" in Xamarin Studio). (The next Alpha build should include this fix.)
Bug 29211 - [iOS] Enabling the linker when the solution includes a PCL that uses System.IO.Compression causes "Could not load file or assembly 'System.IO.Compression' or one of its dependencies" at run time. The same problem can also happen with System.Threading.Tasks (and probably also several other assemblies). Workaround: add
-linkskip=System.Threading.Tasks for System.Threading.Tasks) under "project options -> iOS Build -> Additional mtouch arguments".
Bug 30420 - [iOS]
this.TableView is called in the TableView constructor. Workaround: perform all initialization operations for the TableView in the
ViewWillAppear() methods rather than the constructor.
Bug 30072 - [Xamarin Studio] [Android] Xamarin Studio sometimes crashes with SIGABRT in
gtk_text_view_validate_onscreen() after password is entered during "Import an Existing Key" in "Build -> Archive for Publishing -> Sign and Distribute" workflow.
Non-public Bug 29538 - [Android] Profiling via the graphical Xamarin Profiler ("Run -> Start Profiling") causes the app to crash at startup.
Non-public Bug 29725 - [Xamarin Studio] [iOS] [Android] Expressions in the Watch window are cleared each time you stop debugging.
Bug 29326 - [Android] String resources defined in NuGet packages overwrite string resources defined in app project, causing the displayed app name to be incorrect for example. Workaround: avoid using the same string key that is used in the NuGet packages.
Non-public Bug 30481, Bug 29557 - [Mono] [Android] [iOS]
SqlConnection.GetSchema() fails with "SourceTable is required to be a non-empty string".
Bug 30548 - [Android] Under certain conditions new threads take several seconds to start. This problem seems to be triggered by Xamarin.Insights 1.10. Partial workarounds: upgrade Xamarin.Insights to version 1.10.3, downgrade to version 1.9, or remove it entirely.
Bug 29745 - [iOS] Error due to duplicate symbols during native compilation for device: "duplicate symbol _monoeg_g_array_new" (and many similar messages). Workarounds: disable profiling under "Project Properties -> iOS Build", or if your app uses the
-all_load linker flag (via either
LinkerFlags) try removing it.
Bug 28808 - [Xamarin Studio] Uncommon "Too many open files" error, possibly related to keeping a solution open in Xamarin Studio across several sleep/wake cycles, leads to an inability to save the solution, and consequently a loss of the solution file contents.
Bug 29001 - [Xamarin Studio] Under certain conditions, clicking in the universal search bar can trap the cursor focus, preventing text entry into the text editor window.
Bug 30915 - [Xamarin Studio] [Android] Xamarin Studio repeatedly asks for the password for the selected certificate when attempting to sign using
SHA1withDSA certificates from keystore files. Xamarin Studio should instead display the error message from
jarsigner: "private key algorithm is not compatible with signature algorithm" as it did in Xamarin Studio 5.8. (
MD5withRSA certificates do work without error.)
Bug 29731 - [Android]
Android.Bluetooth.BluetoothAdapter.Enable is incorrectly marked as
[Obsolete("deprecated")] for API level 20 and higher.
[Xamarin Studio] Xamarin Studio 5.9 for Mac requires OS X 10.9 or higher. The updater does not currently block this update on OS X 10.8. The behavior of the updater for this kind of version incompatibility will be improved in the future.
Non-public bug 30990 - [Android] Assertion failure at run time "condition `cur_slot == class->vtable_size' not met" for AOT'd apps on some x86 devices.
Bug 30488, Bug 31208, and several other related bugs - [iOS] "error MT3001: Could not AOT the assembly" and "Error setting up ... class vtable". This problem is caused by a new error check that was added in Service Release 1 (Xamarin.iOS 8.10.1). It will be restored to the old 8.10.0 behavior in the next Beta release (tentatively on June 24).