Original post by: Ginny ,
Connect your PSP to your PC and check if the PSP folder has the GAME folder in it. If it doesn't just make a GAME folder. And in that GAME folder create a new.txt notepad file and save it in there. Just put the games back in. And hopefully it will work. It worked with mine, since there was a problem with the game Rockband Unplugged, but its fixed. Hope yours will be okay.