The same thing happened to me..tried various suggestions but none worked so what i ended up doing is going to the electronic arts folder, where i found my saves (saved games the game folder holds for you) and deleted the most recently saved game file, it will give you date and hour of saving, so of course you will know which is the most recent to the least recent.
I saw the most recent one which was the one i saved after this disaster and deleted it only thst one....
it took me back to the previous save before that one and no GIANT mail box
