i traveled via boat from cottonwood to the legion's fort (the fort), put on some legion armor, since i'm loyal to ncr, and i killed caesar. i ran to safety (back to cottonwood), saved my game, and i was going to return to the fort for a great khan mission, but my xbox locks up at the load screen every time. i've tried traveling by boat again, i've tried just fast traveling from the map, both lock up, and there isn't a way to just walk/swim/jump up there. has anyone else had this trouble?