That is the exact thing that happened to me, cracked right open in the auto turner, and glued itself there. So there I am, shuffling all my eggs into the back up bator, bleaching the primary incubator in the pouring rain, all on the 4th of july... Crazy day there... That rotten egg smell is something you never forget, the only reason I found it in the first place is because I smelled a dud...