Cindy, It sounds like the beam over the upper door has broken or is "bent". This has happened to others here, and maybe one of them will offer some advice on how to fix it. I suspect you're going to have to open that area, probably on the inside to get to the problem.
You MAY be able to effect a temporary fix by cutting two 2x4s of the proper length that you can jam in between the outriggers and the top, when up, on that side.
- Jack