After system crash: Error message: A name must not start with the character '1'

[badabum]

Hello.

I am working with AGS, but now I have a difficult problem and I hope you guys can help me. I had a system crash and when I tried to start the game again, AGS gives me an error message saying "A name must not start with the character '1', hexadecimal value 0x31. Line 10679, position 28." What can I do now? I have made a backup, but after the last backup I put lots of effort into the game and I fear that I have lost all the work.
Please see the attached picture for details. Lines 2-3 are german, but I translated these lines further up.

Greetings
b

[monkey0506]

It looks like the editor is crashing when it's trying to read back the Game.agf file (which is written in XML). You can try renaming "Game.agf.bak" to "Game.agf", but that may or may not work depending on when the system crashed. If it still doesn't work, you could try opening the file in Notepad (or any other text editor) and examine the XML directly. If you're not familiar with XML, I (or someone else) could take a look if you wanted to upload that file. It won't have any game-specific scripts or anything like that, but we would have the basic layout and sprite numbers of your GUIs and their controls, names and sprite slot numbers for your characters, etc. A lot of core information about your game, but nothing that should be detrimental if revealed to someone outside the team.