Bleeeeeh!
But first, let me say "hi nastyjman!" as you and your challenge are the reason I decided to finally sign up here.
This challenge is literally draining the life out of me, and ... what can I say... I love it! I've been playing only the challenge for literal days now (whenever I could manage to spend time on the Sims), and it's oh so very tedious. One thing, however, happened in my game which left me with an entirely different situation, and I'm not sure the event is covered by your rules.
What happened? Well, the game decided that my vampire really wanted to go outside, and she burned into a crisp approximately three seconds later. Needless to say, I was devastated and didn't want to give up on my progress simply because my vampire had died. So, what I did was rather unorthodox... the "head thrall" of my vampire's household (guildmistress to the domestic thralls) decided to become a vampire herself in order to finish the challenge, but then I decided to buy the "Garden Stuff" expansion instead to try and revive my vamp through the Wishing Well. Of course, the now turned vampire head thrall had to go (she died an honorable death), and my original vampire took over again. Vampires are so oh easily killed. One house fire, and everyone runs outside (including vampires) to burn in the sun. One glitch, and everyone spawns outside in the sun. Bleh!
Anyway, although I've bent the rules a bit here and there (nothing major, really, I tried to stick with the spirit of the challenge) it's going to be a big relief once I manage to beat it. Thank you for creating this insanely difficult challenge (at least for me, I hate having to take care of more than one Sim at once), I'm having so much fun ... and frustration at the same time! ;-)