I have been unable to play one of my vaults. I can play my other two just fine. However, the one that is giving me problems, I can play for about one minute then the game stops. I can restart that vault and get the same thing, but I start at the same save point. I don't want to delete this vault as I have a Mr. Handy in it and some really cool weapons. (I have been playing it the most.) Is this related to the objective bug?