Engine crash

Development Programming & Scripting Blueprint
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1

My FPS game project is crashing if I compile a blueprint or play the game the crash report is as follows:

Assertion failed: Existing.Linker->ExportMap[Existing.LinkerIndex].Object==this [File:D:\Build++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectLinker.cpp] [Line: 107]

UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

Please help me recover it…

2

You really have to give a bit more detail than that so that someone can help :slight_smile:
You should start by tracing back to a workable version of your project, and identify what new change(s) you are making that cause the crash.

I vaguely remember having a similar problem once due to some trouble with creating default subobjects…
Anyway, maybe someone understands these error messages better and can be more helpful, but it’d be better if you provided more details or did some troubleshooting yourself first to identify some probably suspects?