Crashes on startup with an error (Batman: Arkham Knight)

There you have a hint in the error written about your problem, namely: Filename not found. This means that the game cannot find the name of some file, well, or files, so if you have a repack, then delete it and download another. I can't advise anything else !.

TheTaker
So how do you know that?, You need to know the exact name and know where to look, and there are a lot of files and try to understand what the game wants. In general, this will only cause a headache, especially if it is not clear what the game requires.

Death_Cold
Oh, it's working!

TheTaker
Wait Crashes and Bugs

TheTaker
Well, it works well. Good luck with your game !.

Captain Bad Day
Probably not, there were no bugs or crashes.