I do not know! It certainly has no viruses in it, but you can wait for the next patch, which will bring in a new save-load system - maybe it'll fix it!
Thanks! The latest update did fix it. I 100%'d it now, by the way! Really fun game... but I agree with Doom Jester's comment from the picturebook, the Bad Ending is the True Ending to me. Definitely the most fun I've ever had losing a game! ;P