I have purchase a new 4g memstick and loaded it with ISOs (all for games which I own, of course) When going to run them, they all come up with an error message 800321 or something - couldn't be started. So then I finally realized that I didn't have a UMD in the drive so I enabled No-UMD mode and they all seem to run now except for 1 (which was working before) Luxor - (my g/f's favorite) we're talking about a pink psp here between me and you.. It starts to load then freezes. Anybody experience this or know anything that would fix it? Thanks in advance.