I'm not sure what would help to be quite honest as I've solved this just by keeping my sim actively on the lot until the festival spawn in correctly, eventually.
I suspect bulldozing wouldn't help if it is a file corruption but it is always worth trying, as at this point your guess is as good as mine.
Also you wouldn't have to start again with the family, just save them to your library and place them into a new game. I do that from time to time with my fav sims when the file becomes super laggy and freezes etc. It's quite nice starting in a new file with played sims. I use the relationship cheats for their extended family who are in different household lots but apart from that it really is an easy process.
Play --- I'll try saving them to my library.
I have a few questions first:
Will they have their skills and satisfaction points/current ages. I turned off aging, and the 2 girls are 6 days from aging up to teen, and I'd like to keep them at that point at the end of their childhood without having to go back and start that over because I had them on long lifespan.
Also, it's a Sim Monday, so maybe, I can have them take a day off from work and school tomorrow, and try to go to Geekcon once more and see if the festival spawns.
Maybe I'm just worrying for nothing
, but you know how it is with your favorite Sims
!
Thanks for your help, anyway!