Hello out there. I am playing FONV for the second time. I beat it straight through doing few side missions. Played on Hardocore and got that achievement. Second time around, attempting to get all the little things. After the quest Come Fly Away With Me, I have tried to visit the Vegas Strip but everytime I go into the door, I get a loading screen, then a black screen. My XBOX has been on for thirty minutes so I know it is not a wait time. I have exchanged the game for a new one from BB. I have updated my XBOX through XBOX Live as much as possible. It still does not load. What can I do? I am an achievement fiend and I need to get all achievements before I move on to the next game. Is this a lost cause? Somebody, please help. The first time I beat the quest Come Fly Away With Me, I launched the rockets successfully. This last time, I had them crash into each other. Is that what caused this problem?

Sounds like an issue that should be resolved with the latest game update for New Vegas. If you're still having issues, I might suggest rolling back to an earlier save near that point so you can try to get the achievement again.