I recently was having a problem with one of my backed up games(Tony Hawk THUG) I was getting a disc dirt error when I tried to play from the HDD. I was cleaning out some saved game via the MS Dash and erased all the THUGed saved games. Then I ran THUg from the drive and it worked. I tried it a second time and it didn't work. I went back to the msdash and there was a saved game of THUG. I erased it and I was able to play it again. I tried this several times and I could play everytime I erased the saved games. Is it possible there could be a media check on the saved games or some other type of protection. Could someone please look into this.