Unreal Crashes when Play VR is launched

Development Platform & Builds
, , , ,
1

Hi guys,

Has anyone experienced this type of crash before? It is happening a lot to my project. It seems to happen when I press Play VR to test the game. The project is a Blueprint project.

Thanks for any help!

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: 0 from an array of size -572662307


UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:440]
UE4Editor_Engine!FCanvas::PushAbsoluteTransform() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\engine\private\userinterface\canvas.cpp:829]
UE4Editor_Engine!UGameViewportClient::Draw() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\engine\private\gameviewportclient.cpp:1188]
UE4Editor_Engine!FViewport::Draw() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\engine\private\unrealclient.cpp:1149]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\unrealed\private\editorengine.cpp:1531]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:368]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2775]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launch.cpp:148]
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
2

I may have found a fix for this issue. It might have something to do with integrating steamworks incorrectly.

I have removed this code from the DefaultEngine.ini

–

!NetDriverDefinitions=ClearArray ; Uncomment the next line if you are using the Null Subsystem ;-NetDriverDefinitions=(DefName=“GameNetDriver”,DriverClassName="/Script/OnlineSubsystemUtils.IpNetDriver",DriverClassNameFallback="/Script/OnlineSubsystemUtils.IpNetDriver") ; Uncomment the next line if you are using the Steam Subsystem
+NetDriverDefinitions=(DefName=“GameNetDriver”,DriverClassName=“OnlineSubsystemSteam.SteamNetDriver”,DriverClassNameFallback=“OnlineSubsystemUtils.IpNetDriver”)

–

Haven’t been crashing since this change was made. Hope this helps anyone else with a similar error.