Here is the problem. 1- I copy my original cart Castlevania: POR save to the G6 ROM save. 2- I start the Castlevania: POR ROM. 3- It tells me the save data is corrupt and deletes the save. However, everything in the original cart works flawlessly. Did you ever have this problem? And how can I solve it? I've tried every writing method for the ROM, and it never worked once. Maybe my ROM is corrupt, but that would be doubtful, since I can easily save from inside the ROM without any problems. Or maybe I need to alter the .0 save file before feeding it to the G4. I don't know. It's not a life or death matter, but I don't want to spend 30 hours of gaming I've already done.