Quote from juicemousezero:
That did the trick, thanks. I made it all the way to the end, beat MB but during the excape the game messes up... when I head through the door that exits the thrid room, it connects me back into the previous room and tosses samus somewhere in the walls, stuck. I got so desperate I looked on SMILE and sure enough, the door blocks legitimitely connect to back there. At least on my patch... pretty weird?
Did you download your patch recently? I remember there were major problems with the escape way back during the week of release, but DMantra fixed all that.
Try using this patch: