hey there, I have a DS with a 4GB R4SDHC card. When I try to play games like prof layton I have a problem. I can play normally but when I save, switch the ds off and restart then i get the message " .sav file is corrupt. Need to delete the file". This is very annoying, costs me a lot of playing time . I dont have this problem with all games. Games like mario kart, big brain academy work fine. Games like prof layton, dragonology, star wars etc give this problem. I´ve already upgraded the kernel to the latest version (1.30) and formatted the disc with panasonic format program. But no luck yet. Anybody here knows how to solve this? thx