I was playing one of the campaigns and saved my game to go get some lunch. When i came back and started the game back up it came up with a error message after i clicked on the desktop icon saying "Please insert the original disc instead of a backup. See http://www.securom.com/no_orig_found for more details."
I went to the site it listed and it recommended i make sure i have my drives set to "Use DMA if Availale" which they were already set to. I have not had a problem at all until now and the game disk is the same one ive been using since i got the super collectors edition in the mail. I checked to make sure the disk wasnt dirty or scratched and it is not at all.
Any other ideas?