This thread has now been closed to direct all further updates about this release onto the new Stable release thread:
Reason for release: Updated SDK bindings and compatibility support for upstream iOS 9.0 and Xcode 7.0 GM versions.
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 April 29 Stable release thread for the older downgrade links.
This first post will be updated regularly.
The goal of this thread is to help answer "what might break if I update to this release?"
If you find a new problem that is specific to this version:
a. If you can share some specific error messages or can reproduce the problem consistently, please email the information you have so far to
b. If you only have a general description of the problem, you can post it directly on this forum thread so that hopefully a member of the Xamarin team or another user will recognize it and be able to help fill in some details.
Non-public Bug 31424 - [Xamarin Studio] [iOS] Classic API on Mac only: "Resource rules files "" not found". Partial workaround: Enable "Project Options -> General -> Use MSBuild build engine (unsupported for this project type)" and clean and rebuild the project. (The MSBuild build engine does now work for many Classic API projects.)
Non-public Bug 33880 - [Upstream] [iOS] Attempting to stop a WatchKit app in Notification mode does not stop the app. (The same problem occurs with an Objective-C or Swift app deployed from Xcode, so this is an upstream issue.)
-linkskip=System.Threading.Tasksunder "project options -> iOS Build -> Additional mtouch arguments".
Bug 30513 - [Android] The logged stack traces from exceptions thrown within async methods do not include the actual location where the exception was thrown. Fixed in the current "Cycle 6 Preview" Alpha version. (Partial workaround: switch back to the old Xamarin.Android 4.x exception propagation style by setting the
XA_BROKEN_EXCEPTION_TRANSITIONS environment variable to
true (see also Bug 30513, Comment 11))
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.
EDIT Sep 11: No Xamarin Studio Windows installer is needed for this release. Add forum discussion 50492.
EDIT Sep 14: Remove iOS Bug 33853 (fixed). Relabel iOS Bug 33880 as upstream.
EDIT Sep 16: Update for new builds. Add Mac-only iOS Bug 31424.