Thanks for replying! I did not know about the puzzle room glitch. I'll have this fixed soon.
I've actually heard of the other glitch before with the keyboard freezing up - this one is indeed much harder to pin down as I've never encountered it myself. I'll be sure to keep an eye out if anyone reports a specific area this glitch happens in so I can fix it.
On obtaining the Grandmaster recipe, you'll need the previous three recipes found around the world. One is in a Temple in the air overworld, one in the Labyrinth under the sea, and the last is in a cave network underground - each one's location is marked on the maps in the miniguide. I went ahead and updated the miniguide with this information as well.
One last question if you don't mind, concerning the miniguide: do you feel like there's any additional maps I should add to it? I had a lot of requests for this on Knight Bewitched, so I'd like the guide to be as fleshed out as possible before its release on Aldorlea.