Hey, which build is this? Windows?
Never saw something like this before.
The game tries to save to persistent folder ("%userprofile%\AppData\LocalLow\").
Maybe your username contain symbols it can't read, or your user doesn't have permission to access that folder. You can try to run the app as an administrator - if it doesn't work then there's nothing I can do for you. :^(
I don't have folder called "userprofile" (just what username? in the game or in itchi.io?), sorry i'm bad on PC... otherwise my username is "The owl"No, %userprofile% refers to your PC's user.
Anyway, you can try: right click on CummyBender icon - Run as an Administrator (Exécuter en tant qu'administrateur). Then try to save in game. If it doesn't work, then the locale is the problem or some permission restrictions on your PC. That game is pretty old, and wasn't updated in years...