UnrealEditor keeps 4.26.2 keeps crashing on startup while loading assets, says "assertion failed"

Im using the version of the unreal editor that is used for the Mechwarrior 5 mod editor, which is 4.26.2.

For some reason, i am now constantly getting this crash after i start the editor. The editor starts fine and then it automatically starts loading assets. It will then crash with about 1664 assets left.

Assertion failed: Linker->AsyncRoot == nullptr || Linker->AsyncRoot == this [File:D:/Projects/Editor/Engine    /Source/Runtime/CoreUObject/Private/Serialization/AsyncLoading.cpp] [Line: 5816]
UE4Editor_Core
UE4Editor_Core
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

Oddly, it only crashes while loading assets if my main mod is set as the active mod. If i set an empty mod as the active mod, the editor will not crash while loading assets. I can then set my main mod as the active mod and the editor will work fine.

Does anyone know what this assertion failed means?

Hey, did you manage to fix this issue?

I’m having the same issue, closed my project and everything was just fine. Now it crashes with this exception.