[Solved]Access violation when deploying on Xbox One using UWP

Hi

I have just developed my first Unity3d Game and want to run it on an Xbox One S via UWP. I have followed an excellent guide here on the forum and I can get a sample application (empty project with a cube) to run, but every time I try to deploy my own game, it crashes with the following error:

0xC0000005 occurred

Message: Exception thrown at 0x00007FFFDFD875A9 (unityplayer.dll) in Game.exe: 0xC0000005: Access violation reading location 0xFFFFFFFFFFFFFFFF.

I don’t know if it makes sense to anybody, but here is the code that crashes:


FMOD_strcpy:

00007FFFDFD87570 mov qword ptr [rsp+10h],rdx

00007FFFDFD87575 mov qword ptr [rsp+8],rcx

00007FFFDFD8757A push rdi

00007FFFDFD8757B sub rsp,10h

00007FFFDFD8757F mov rdi,rsp

00007FFFDFD87582 mov ecx,4

00007FFFDFD87587 mov eax,0CCCCCCCCh

00007FFFDFD8758C rep stos dword ptr [rdi]

00007FFFDFD8758E mov rcx,qword ptr [rsp+20h]

00007FFFDFD87593 mov rax,qword ptr [rsp+20h]

00007FFFDFD87598 mov qword ptr [rsp],rax

00007FFFDFD8759C mov rax,qword ptr [rsp+20h]

00007FFFDFD875A1 mov rcx,qword ptr [rsp+28h]

00007FFFDFD875A6 movzx ecx,byte ptr [rcx]

00007FFFDFD875A9 mov byte ptr [rax],cl


How do I debug this? I tried to look for logfiles on the xbox, but I can’t really find anything. The game runs perfectly when I run it as app on my local Windows 10 PC.

Any advice would be greatly appreciated.

Thanks

Thomas

 

Crash location:
[global::System.Runtime.InteropServices.McgGeneratedMarshallingCode]
[global::System.Runtime.CompilerServices.MethodImpl(global::System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
public AppCallbacks()
{
global::System.IntPtr retval;
retval = global::System.Runtime.InteropServices.McgModuleManager.ActivateInstance("UnityPlayer.AppCallbacks");
global::System.Runtime.InteropServices.DebugAnnotations.PreviousCallContainsUserCode();
this.__AttachAndRelease(retval);
}

 

OK, just discovered that this error is only shown when running "Debug" target in visual studio. Release works.