Cannot open UE4.19 project

Development Platform & Builds XR Development
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1

I restarted UE4.19 project, and the project crashed around 98% and printed this log.
This project uses latest update’s mobile AR Blueprints.
And when I changed the plugin settings (kind of VR) and restarted, it happened!!

[2018.04.27-08.48.28:284][  0]LogWindows: Error: === Critical error: ===
[2018.04.27-08.48.28:284][  0]LogWindows: Error: 
[2018.04.27-08.48.28:284][  0]LogWindows: Error: Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\Containers/Array.h] [Line: 610] 
[2018.04.27-08.48.28:284][  0]LogWindows: Error: Array index out of bounds: 0 from an array of size 0
[2018.04.27-08.48.28:284][  0]LogWindows: Error: 
[2018.04.27-08.48.28:284][  0]LogWindows: Error: 
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000D5704008 KERNELBASE.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000B7297884 UE4Editor-ApplicationCore.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A4226D9B UE4Editor-Core.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A4161939 UE4Editor-Core.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B83D99 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B64ED5 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3C86775 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3C88069 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B4BADB UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3C2A19A UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3C27067 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008B5DBA16 UE4Editor-UMG.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008E9E166A UE4Editor-Engine.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C47D23C UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008920F302 UE4Editor-Kismet.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000891A00DF UE4Editor-Kismet.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008919CA43 UE4Editor-Kismet.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008DC1C4F7 UE4Editor-Engine.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A39BA918 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B73102 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B98A11 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B71862 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B734CB UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B99714 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3CD2CE6 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC75BD UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5ECF UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC77FB UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5ECF UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5D12 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B7FDD1 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC52F3 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B755BE UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B8DDD1 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3CD2A9D UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC75BD UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5ECF UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC77FB UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5ECF UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5D12 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B7FDD1 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC52F3 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B755BE UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B8DDD1 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3CD2A9D UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC75BD UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5ECF UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC77FB UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5ECF UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC5D12 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B7FDD1 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3BC52F3 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B755BE UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3B8DDD1 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3CD2A9D UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000A3CD2154 UE4Editor-CoreUObject.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C0BD483 UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C0AEEC5 UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C092FE2 UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C910389 UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C391E3B UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C391A8F UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C8C84DE UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000008C893BA3 UE4Editor-UnrealEd.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000007C266AC6 UE4Editor.exe!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000007C266C4A UE4Editor.exe!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000007C274149 UE4Editor.exe!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x000000007C275B57 UE4Editor.exe!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000D71E1FE4 KERNEL32.DLL!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000D8C4F061 ntdll.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: [Callstack] 0x00000000D8C4F061 ntdll.dll!UnknownFunction []
[2018.04.27-08.48.28:284][  0]LogWindows: Error: 
[2018.04.27-08.48.28:294][  0]LogExit: Executing StaticShutdownAfterError
[2018.04.27-08.48.28:296][  0]LogWindows: FPlatformMisc::RequestExit(1)
[2018.04.27-08.48.28:296][  0]Log file closed, 04/27/18 17:48:28
2

I tried to delete Intermediate, Save and UE4.19 DerivedDataCache directory.
Or, rebuilt using VisualStudio.
But nothing changed.

Sorry my bad English.

3

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks