Hi, I followed the order of your events and was still able to leave the room and interact with all of the books. (And recorded it if you'd like to see that.) There's no starting condition for either of these, and they end in an else branch so there shouldn't be a time when they do nothing at all... UNLESS you've viewed the key from your menu sometime during doing the books. So, I have found a game ending bug, and I have to assume that this is what's caused the error since I just can't seem to find another reason for it. I've used the event searcher and only the key, house (comes later), and storeroom events use this "books carrying" variable that can break the interaction. The actual chair and cheat sheet don't reference it at all. I'm sure I followed everything you mentioned on the thread, and Judge DOOM didn't seem to interact with any of the optional events to cause this error so it's really weird and frustrating. I don't know how it's only happening sometimes and that I'm unable to trigger it (I play from the deployed version on here, it's the only file I ever had up for download and I haven't updated it from the contest.) I am about ready to tear my hair out, but I'll keep trying to see if there was some other cause. At the very least, I want to be sure that everyone who'd like to play the game was able to.
Thank you for your time.