I've been playing the game for a while, absolutely love it, its one of the best! one of my friends suggested that I get the dlc extra quests, like the pitt or broken steel. I followed his advice and got all of them. the only one that installed was the mothership zeta. all of the others get about 2/3 through the install then come up with and error message that says "Catastrophic error" I dont know what to do, so some help would be appretiated, thnx!