UE4 Crashing

Hello Guys,
I was working on below Level and by mistaken I click on PLAY Icon and my level crash and not opening I tried opening Auto save and backups as well but no luck
below is the log info
[2016.07.25-09.46.55:574][669]LogWindows: Windows GetLastError: The operation completed successfully. (0)
[2016.07.25-09.46.56:001][669]LogWindows:Error: === Critical error: ===
Fatal error: [File:D:\Build++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Foliage\Private\FoliageInstanceBase.cpp] [Line: 90]
Instance base cache - integrity verification(3): Counter: 21 Size: 20, InvSize: 16 (L:1 S:0 T:0)

[2016.07.25-09.46.56:063][669]LogExit: Executing StaticShutdownAfterError
[2016.07.25-09.46.56:065][669]LogWindows: FPlatformMisc::RequestExit(1)
[2016.07.25-09.46.56:065][669]Log file closed, 07/25/16 13:46:56


(This thread came up in a Google Search, so I’m bumping it with more information)

It looks like this is related to this Unreal Answers post. The good news: It’s slated for fix in 4.13. The bad news: It looks like the workaround for the moment requires modifying engine source.