My son started playing the game in his room on his xbox using his xbox live account (we have a family account), yesterday his friends came over so he was showing the game to his friends on the shared xbox. When he went back into his own room and tried to play the game on his own xbox he is now presented with an error message saying he does not have the required content. I tried installing the DLC under my xbox live account on his xbox, but when the game starts it declares the dlc invalid.
I'm not aware of any compatability pack, so I assume he needs his own copy of the dlc, which of course cannot be purchased as it was specific to BestBuy. Can someone offer me a solution that allows him to continue playing with his saved game.