Okay, so my brother has just bought the "Games on Demand" (Digital Download) version of the first Mass effect game. Whenever he tries to play it he gets a Disc read error message, forcing him to return the dashboard. I'm pretty sure he shouldn't be getting a disc read error for a digital copy of the Game. I've tried deleting it and starting again to no avail. So before I trudge off to the dank pit of Microsoft "Suppourt", does anyone have any helpful pointers?