So, I just beat Old World Blues on the PC, got the teleport gun, went back to the Mojave and tried to go back to the Big MT. Only It won't let me. I get the message that I need to use it in an exterior Mojave area and that it doesn't work in certain areas. I traveled to various locations all over the map and even ran out into the middle of nowhere and I still get this message? Anyone else experiencing this? I really want to go back to the Sink to get the stuff I left behind.

I kinda had this problem, only it wore off after a little bit. I'm not sure if it was just because I was in Hidden Valley ATT or because of the same glitch, though.

And I'm on PS3, so it's probably because I was in Hidden Valley.

Wrong forum, but this is a known bug and I beleive it is being adressed.