Loading problem

I was having an epic time playing with my main character when suddenly the game crashed. Now, every time I attempt to reload, I can select my character, but it freezes on the loading screen. I've tried restarting my Xbox twice, but no luck. I even created a new character, and that one works fine, but I'm really missing my main! Does anyone have any tips on how to fix this? I’d really appreciate it!

As not said I discovered that is a problem related to the map. Thanks