My brother bought KotOR 2 and is using it fine. I burned the 1st disk to use so we can both play at same time. But, i cant play with the burned one. It installes fine, tells me I meet all the requirements. But when i click on the logo then "game", it works for a second than just quits. Nothing comes up. Every once in a while, a message comes up saying that there wasnt enough time to authenticate the disk. Can I not use a burned disk? How can we both play at the same time (not with each other, of course)?