I'm about 32 hours into the game and I decided to finally go into New Vegas. I stopped at the Lucky 38 to speak with Mr. House and now every time I try to leave the building I see the loading screen and then the screen goes black and the game locks up. Has this happened to anyone else? I have loaded a previous save, and I am doing side quests, but I'm not sure if I should try going into the Lucky 38 again.