I have an issue with UE5 projects crashing upon startup out of no where. These projects were worked on for a while until one day I can’t open the specific project anymore. Currently I’ve only been prototyping and experimenting in 5 however I was hoping to do my next project in UE5 as well but this makes me question that.
The Crash:
The crashes seem to be caused by certain corrupted files. The engine will crash at launch unless you set the start up level to none or to a level that doesn’t use any of the assets. However if any of the assets are interacted with, (opening them, moving, deleting etc.) the engine crashes. It doesn’t give an error and the logs didn’t tell me anything either, but I’ll include one regardless. Basically, if the assets are used, in-level or in-editor, the engine crashes.
CrashLog.log (83.3 KB)
Potential cause:
In both projects the issue seems to be caused by files saved through the pop up when exiting the engine, asking if you want to save unsaved files. This is based on the fact that all assets with a save date of that last exit are corrupted while files that were saved earlier can still be opened. See attached image (image shows niagara systems but same issue occurs regardless of asset type). My current theory is that this save corrupted those files? Somehow?
Things I tried without success:
-Deleting cache, temp and generated Engine and project files
-Reinstalled Engine
-Ran it without any plugins
-I can’t view the assets in-engine but looking at them in text form nothing seems off
-Increased GPU delay through RegEdit to avoid time out
Unfortunately, as these projects were just quick prototypes etc., I don’t have it linked up to source control and therefor can’t diff versions…