Ok,

I read about the bounter hunter issue from the Atomic Wrangler questline, and i've made sure not to go and kill anyone. Now, when I was last in the building, I could enter the door upstairs (that shows up red for trespassing) and snoop around no issues. I've since gone off and done some other missions, like killing Motor Head or whatever he was called and clearing out all of Vault 3.

I came back to the Atomic Wrangler, because I need to find someone in there, and when I try and go through that same upstairs door now I get the loading screen, the roulette wheel spins once and then darkens and stops and my xbox locks. I tried this at least 5-6 times and it was always the same, even tried a different save, same issue when I get back there. Cleaned the disc, tried again, no luck. Put on the cowboy hat in case it was similar to the hunter glitch, no luck, so today I took the game back to the shop and got a new one... loaded it up, went to the door, loading screen comes up. It didn't go dark, but did still freeze.

It's really annoying, I want to get back in there. It's not game breaking, cause my main missions have sod all to do with the place, but I want to go back in there to clear up a couple of little missions which told me people were in there and were needed back at camp.

Any help, or workaround known for this glitch?

This is so far my only glitch i've had, except for my character walking around with a head as if he'd been gibbed. But that sorted itself when I saw a doctor.