HLOD bug: Crash on build "Fatal Error!"

Hi!

Working on an Open-world game at the moment. No issues with building HLODs in the beginning of the project, but suddenly the building process stopped working during the re-opening step of the engine; after the HLODs are built and the map is getting opened again.

Error message just says “Fatal Error!” when loading the map at the same point every time.

This seems local to one level, error does not appear when executing Build HLODs function in other levels. Opening the level normally works fine.
Have tried to remove all HLODs from scene and it doesn’t work. Have tried removing any null actors or faulty actors I can find but to no help.

When reviewing crash logs the only thing that is looking out of order is at the bottom. The process of building HLODs and shutting down the engine works, but when it is initialized again this is written out:


My question is - do you think it has to do with some sort of corrupt actors? Or is it an engine-issue at it’s core?

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