I am playing through my second time in Fallout new vegas in order to do the DLCs (I passed the point of no return on my original and didnt save before). I bought and played through Honest Hearts and then wanted to start Dead Money again (I played through dead money once on my old save), the problem is that when I go to the abandoned brotherhood of steel bunker, it says it is locked and needs a key. I heard that this was a glitch and I have tried everything I could to fix this. I had the game fully updated and I reinstalled all the updates and dead money, as well as clearing the system cache and nothing has worked, help me out!