I Purchased, downloaded and installed New Hearts, Old World Blues and Dead Money. When I start the game up, I can see them in the Downloadable content sub-menu but when I click on any of them to play, the screen basically hangs. That is to say that nothing happens, it acts as if it might be loading but the screen never gives me the option to continue. This is on the PS3 platform. I was excited to be able to continue playing but am getting very frustrated now. I completed the original game, does that make a difference?