While replaying this game, I found a game-locking glitch that's possible to encounter. After you get the airship, if you go to the town/temple on the Etherlands before getting the key to the temple door, the game won't let you leave back to the overworld, possibly locking your game if you haven't saved in another slot.

I've uploaded a fix, also correcting a few other errors while I was at it. Pending anything else major, this'll probably be my last update of this game. It's been fun revisiting my old teenage efforts, but I got a lot of future projects I want to get done :D