So after playing for 3 or so hours, we exited back to the main screen to sign in on a different account. When we did the game suddenly crashed and now everytime I try to start the game it crashes and goes to the "please wait" screen. It crashes right after it says "press any button to start" and I press a button.
We uninstalled and reinstalled multiple times to the same problem. We even traded our disc back for a brand new one and the same thing is happening. WHAT THE HELL BETHESDA!?!?
Please help. All other games on our Xbox work perfectly and we've never had a problem like this. Do we just give up and return the game?

I'm having the same problem. I can play on all other users than the one i've played 16 hours on.

I fixed it, you have to remove your account from the xbox, then enter fallout with another account. Then when you are at the home screen, click switch accounts, then download it from there.

Thanks! I'll give it a try. Glad you figured that out