I just bought the GOTY for PS3 and I'm having a serious problem with the main quest. When I get to Smith Casey's Garage, everything's normal but there's no "Open Door" option when I get close to the exterior door. In fact, I can walk right through the door and into what looks like a transparent wire frame of the building, outside of which I can see the wasteland. I can only get in and out of here by walking through the door, but at no point can I actually get INSIDE the building.

I wasn't able to find any information about this issue at the Fallout wiki--only one person even mentioned encountering it and there were no solutions posted. However, it's a pretty severe bug as I only appear to be about halfway through the main quest, and from everything else I've read it doesn't look like I can bypass this part. Is there any workaround? Does anyone have any suggestions?

Yeah. I had this problem too. Fast travelling away, and then back fixed it for me. Best of lucjk.