My battery decided to say "goodnight" just when I was restarting book, at the "choose bonus discipline" phase. Now, when I try to load save, I get:

Followed by:

Judging by message, I suspect, that book+page got saved wrong way, due to unusual moment when program terminated. You may want to implement some sanity check for it, if possible. BTW, is there a way to "recover" my save, by editing parts of save file (book and page)?

/Estel