Pretty much prior to my black screen problem http://forums.xbox.com/xbox_forums/general_discussion/f/341/t/1637446.aspx with the game, I had another problem with KI. It seems to constantly erase my save data. Sometimes it does it randomly, and sometimes it does it when two profiles are signed in at the same time.
Now I know how to temporarily fix the problem. Sometimes all I have to do is sign out then sign back in, and when that doesn't work I have to restore the console back to it's factory defaults (which I hate).
But I want a permanent fix to this problem. Its annoying having to restore the console because I have to re-download everything. And download speeds (especially for games) aren't very fast.