ok well i spent forever on this add on and now that i finally beat it when i try to leave the think tank to go to either big mt or the sink it will go to the loading screen with the roulette table, then go black. every time. i downloaded it to my hard drive and that didnt help. i heard you need to get a patch so once you get your xbox online how exactly do you get the patch?

Patch automatically downloads if you are online.
But you should restart the game, the game only downloads patches when you start a game, not while ingame.