That's a strange one, remember anything weird that could have caused it - like saving a bunch of times in a row or did it just pop up out of nowhere? While we're working on figuring it out, you can tell me what stuff you had and I can send you a save file so you can get it back.
Well I made the Skeletoon Key and I went in the room. Had some fights with some enemies safed had another fight and then the game froze crashed and my safe file went poof.
