Unreal Engine 4.25 released!

[Hardy_Games]

@unit23

Okay, create another GameInstance inside a clean project under the same folder structure, name it like the corrupted, then copy it over the corrupted (before you made a backup ofc). Perhaps now you can load the maps again?

Tried this. Even with a clean GameInstance in place it crashes. Even if I just right click the thing. Quite bizarre. Was worth a shot though

Corruption can go unnoticed, Unreal Engine upgrades trigger corruption, since they usually evaluate file serialization anew. The question here is why you have a serialization error. At least it suggests that your SSD or harddrive is faulty. There could be more affected files in your project, which will be made noticeable inside the output log with things like unexpected bytes warnings.

The only errors I get in the Output Log are a bunch of errors regarding ‘Macro node Macro instance is pointing at an invalid macro graph’. From what I can tell these are coming from most of the Blueprint that are crashing the engine. The debug error I got in WidgetBlueprint.cpp in Visual Studio also mentions that ‘Graph’ is nullptr, which seems to suggest the problem relates somehow to that. It is a bit above my experience level at this time to know how these things are related but I am continuing to research it.