Fallout New Vegas keeps crashing to desktop, everytime I complete Old World Blues. In the "Think tank" after having the last conversation with Dr. Klein, and then exiting the think tank... It crashes to desktop. I can tell it's the end of Old World Blues, because of the fact that sometimes it will play music for a second, (like it does at the end of the other DLCs, along with your video ending). But it just crashes to desktop. What do I do?