Error when saving scores

Every single time when i try to save something, it just gives the same message: "Your score could not be saved, an unknown error occured while saving this file."
This has been going on for months, i tried saving it to different folders, with different names, made backups, reinstalled the whole studio on multiple occasions but i can't fix it. Sometimes it randomly works, but 95% of the time i just lose all of my progress.