I'm having the same situation with mine. My first pair of eggs hatched, but I screwed up in regard to humidity and lost them. The second pair went bad (let vermiculite get too dry, they seem to be very sensitive). I now have two pairs one of which looks great, but taking quite a while. The good news is the ones that went bad before molded over, so hopefully for yours and my sakes they're just late hatchers. Let me know what happens, and I'll do the same. Anyone out there have any hints it'd be appreciated.
Mark