Aw, sorry to see that there is a crash here. Unfortunately, I'm not sure what's causing it and I'm no longer able to support the game (the code is far too out of date) so I can't fix it. It might not happen if you try again, hard to say. What it drops is not necessary to beat the game.
yeah i tried beating the worm about 3 times and it crashed every time. maybe i'll try again eventually. but yeah, i realized it doesn't drop something essential. just reached the hidden conclave; about to go and fight last at obsidian fortress! i'm super excited and i've been loving this game. thanks for all your replies and helpful hints!