I am so sorry to see this Sly, I only ask, don't give up. Try again next season. I had a similar thing with my Texas Rat Snakes last year, but I have bred them again this year. Once again, my sincere condolences.
It is better to be Pissed Off than Pissed On. Roland Friskin
Sorry for your loss. I really wonder why this happens. I think a lot of it is because the female just holds them too long and they expend all their yolk reserves? I wonder if she is just not happy with the laying site?
And God has Created every animal from water, of them are some creeping on their bellies, some walk on two legs, and some on four. God Creates what He wills, for sure God has Power over all things. (Noble Quran 24:45)