How would i debug something like this?

I havent renamed anything lately. No Structs / enums, not even BP’s.

I double checked, but there are no Redirectors in the project, i have the ‘Show Redirectors’ filter enabled and always fix them up as soon as they appear.

It was working, and i made a backup using the Clone option in the Launcher, and the backed-up project has a different name but this project didn’t change, and now both of them stopped working ( …in standalone, PIE still works ), lol.