REALLY NEED HELP WHEN I OPEN A MAP

Development Programming & Scripting
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9

I encountered the same error, though not related to the Cesium plugin. In my case, the crash occurred because a Blueprint (or other object) held a strong reference (TObjectPtr<AActor>) to an Actor in the level, preventing garbage collection (GC) from unloading the level properly.

Solution:
Replace TObjectPtr<AActor> with TWeakObjectPtr<AActor> in any Blueprint or C++ class storing level Actor references. This ensures the level can be garbage-collected when needed.

Why it works:

  • TObjectPtr creates a persistent (strong) reference, blocking GC.
  • TWeakObjectPtr allows GC while still providing access (check with IsValid()).

Hope this helps others facing the same issue!