1. You need a file manager e.g. Multiman
2. Create a new save in game you can load
3. Copy your old Save the not working one to USB
4. Browse on the file manager to the user (e.g. 0000001 or 00000000) go into the save game folder and open the corresponding save (e.g. BCXXXXXXXXXX - Save)
5. Copy from the USB Stick everything into the save folder on the PS3 (it will overwrite) except the sfo
6. Go in game load save and create a news save the next time y save