Editor crash at launch 4.12.5 with OVRServer_64 running

When I launch 4.12.5 I immediately get a crash (doesn’t get beyond 0%) if the OVRServer_64.exe process is running in the background. Crash doesn’t happen on 4.11.2 or 4.13.2. Tested on windows 7 and windows 10.

Crash report:

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 804]
Array index out of bounds: 1 from an array of size 1

UE4Editor_Core!FDebug::AssertFailed() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:440]
UE4Editor_D3D11RHI!FD3D11DynamicRHIModule::FindAdapter() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\windows\d3d11rhi\private\windows\windowsd3d11device.cpp:367]
UE4Editor_D3D11RHI!FD3D11DynamicRHIModule::IsSupported() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\windows\d3d11rhi\private\windows\windowsd3d11device.cpp:187]
UE4Editor_RHI!PlatformCreateDynamicRHI() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\rhi\private\windows\windowsdynamicrhi.cpp:81]
UE4Editor_RHI!RHIInit() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\rhi\private\dynamicrhi.cpp:172]
UE4Editor!FEngineLoop::PreInit() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:1456]
UE4Editor!GuardedMain() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launch.cpp:114]
UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

Hey solitario,

It looks like you’re experiencing the crash linked below:

This has been resolved in 4.13, and you can grab the fix commit from the link on the issues site.

Have a great day