Error building for UWP / Windows 10 Store

I recently updated to Unity 5.2.3f1 due to some bugs that were resolved in the new versions.

But I started getting the following error in the Visual Studio Project -

Code (CSharp):

1. Expected Windows.Foundation.Metadata.ActivatableAttribute to exist. Check that Windows.winmd is referenced by your build system.    

So I checked if any Patch releases were available. I tried 5.2.3p1.
Visual Studio stopped giving build errors but the game crashes before the splash screen is shown or any info in the debug log is shown.

Only the following log is shown -

Code (CSharp):

1. 'My App' (CoreCLR: DefaultDomain): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreRuntime.1.0_1.0.23302.0_x86__8wekyb3d8bbwe\mscorlib.ni.dll'. Cannot find or open the PDB file.
2. 'My App' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Code\My App 3D Win10 14\My App\bin\x86\Debug\AppX\entrypoint\My App'. Symbols loaded.
3. 'My App' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Code\My App 3D Win10 14\My App\bin\x86\Debug\AppX\System.Runtime.dll'. Symbols loaded.
4. 'My App' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Code\My App 3D Win10 14\My App\bin\x86\Debug\AppX\WinMetadata\Windows.winmd'. Module was built without symbols.
5. 'My App' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Code\My App 3D Win10 14\My App\bin\x86\Debug\AppX\System.Runtime.WindowsRuntime.dll'. Symbols loaded.
6. Exception thrown: 'System.Exception' in System.Runtime.WindowsRuntime.dll
7. Exception thrown: 'System.TypeLoadException' in System.Runtime.WindowsRuntime.dll
8. The program '[8572] My App' has exited with code 0 (0x0).
9. Activation of the Windows Store app 'MyApp!App' failed with error 'The app didn't start'.

The game used to compile and run without errors until the updates, but I had to manually copy some dlls etc. for it to work. I don't understand the problem exactly. All help is appreciated.

 

I tried what you said but to no avail.
There is no output in the debug log besides the one I already mentioned above.
Its probably not a bug in my code.
There should be Unity's logs which show the device's properties for eg. the graphics card properties in my system, the logs where it states Splash Screen is loading etc.
None of those logs are showing up.

And the Exception details are not helpful. They are as follows, and they are the same as they were before I checked the boxes of "Common Language Runtime Exceptions" -

Code (CSharp):

1. System.Exception was unhandled
2. Message: An unhandled exception of type 'System.Exception' occurred in Unknown Module.

 

OK, so I got one step further into the details of the exception. It now shows the following log -

Code (CSharp):

1. System.TypeLoadException occurred
2. Message: Exception thrown: 'System.TypeLoadException' in System.Runtime.WindowsRuntime.dll
3. Additional information: Could not find Windows Runtime type 'Windows.ApplicationModel.Resources.Core.ResourceContext'.

Is it not able to load a certain dll???

Update :-
I downgraded to Unity version 5.2.1p2 again, and according to the following thread mark a plugin as "Don't Process"

http://forum.unity3d.com/threads/co...ndows-foundation-universalapicontract.368152/

 

Please have a look at the attached image for the call stack.
The exception is occuring in external code, not in the game's code.

 

Yes its occuring in an empty project also.

Please check this thread once, I made changes to Windows.winmd file in th eWindows Kits before and might have undone those changes also -

http://forum.unity3d.com/threads/wi...ersalapicontract-and-windows-conflict.357786/

It seems to me that this might be causing problems. Also, in that case which version of Unity should I use and what winmd file should be there?? the original or the changed one as stated in the other thread?

 

Thank You!
That solved it.