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Created attachment 16177 [details]
A WinRT app crashes on start up when deployed in release mode, both on WP 8.1 and Win 10 Mobile. The app crashes after Forms.Init() with the output:
> Exception thrown: 'System.Runtime.InteropServices.COMException' in Xamarin.Forms.Platform.WinRT.Phone.ni.DLL
I was able to reproduce the issue starting with Forms 2.1 and up to the latest pre-release. The app will launch successfully in debug mode, and it also deploys in release mode on an emulator.
### Steps to Reproduce
1. Deploy the attached WP 8.1 project in release mode to a device
### Expected Results
The app will launch and display the default "Welcome to Xamarin Forms!" screen
### Actual Results
The app crashes immediately
### Environment Info
Microsoft Visual Studio Professional 2015
Version 14.0.25123.00 Update 2
Microsoft .NET Framework
Installed Version: Professional
Visual Basic 2015 00322-40000-00000-AA362
Microsoft Visual Basic 2015
Visual C# 2015 00322-40000-00000-AA362
Microsoft Visual C# 2015
Visual C++ 2015 00322-40000-00000-AA362
Microsoft Visual C++ 2015
Windows Phone SDK 8.0 - ENU 00322-40000-00000-AA362
Windows Phone SDK 8.0 - ENU
Application Insights Tools for Visual Studio Package 5.2.60328.3
Application Insights Tools for Visual Studio
ASP.NET and Web Tools 2015.1 (Beta8) 14.1.11106.0
ASP.NET and Web Tools 2015.1 (Beta8)
ASP.NET Web Frameworks and Tools 2012.2 4.1.41102.0
For additional information, visit http://go.microsoft.com/fwlink/?LinkID=309563
ASP.NET Web Frameworks and Tools 2013 5.2.40314.0
For additional information, visit http://www.asp.net/
Common Azure Tools 1.7
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.
A Visual Studio Extension that brings the GitHub Flow into Visual Studio.
Microsoft Azure Mobile Services Tools 1.4
Microsoft Azure Mobile Services Tools
NuGet Package Manager 3.4.3
NuGet Package Manager in Visual Studio. For more information about NuGet, visit http://docs.nuget.org/.
PreEmptive Analytics Visualizer 1.2
Microsoft Visual Studio extension to visualize aggregated summaries from the PreEmptive Analytics product.
SQL Server Data Tools 14.0.60311.1
Microsoft SQL Server Data Tools
TypeScript tools for Visual Studio
Visual Studio Tools for Universal Windows Apps 14.0.25219.00
The Visual Studio Tools for Universal Windows apps allow you to build a single universal app experience that can reach every device running Windows 10: phone, tablet, PC, and more. It includes the Microsoft Windows 10 Software Development Kit.
Xamarin 188.8.131.52 (a9c7826)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.
Xamarin.Android 184.108.40.206 (ee215fc)
Visual Studio plugin to enable development for Xamarin.Android.
Xamarin.iOS 220.127.116.11 (be25da5)
Visual Studio extension to enable development for Xamarin.iOS.
I just tried this on a Nokia Lumia 920 and was able to deploy and run it just fine.
What device were you using?
Huh, interesting. I tried on a Lumia 635 running WP 8.1 and Lumia 925 & 950 both with W10 Mobile.
The customer said it worked on their WP 8.1 device, but they might be using an older version of Forms 2.1 so I'm trying to confirm with them.
Because we have not received a reply to our request for more information we are closing this issue. If you are still encountering this issue, please reopen the ticket with the requested information. Thanks!