@puzzlezaddict
Hi there,
I was just reading everything @simAzeroth wrote, when I realised I had finally found someone who was having the same problem I am having today. So, ecstatic that someone also replied with a set of solutions that actually seem really reasonable, I began trying all of them out with a smile on my face.
Well, I guess you can say now that after trying over and over for the last three hours, that smile has become pretty much non-existent...
So, that's when and why I decided to reply, as I noticed you were still active on the platform, and ask you whether you could maybe think of anything else I could try out if all the options above didn't work out as they should've.
I'll also add in a bit of backstory just in case: the last time I played, was yesterday evening and there wasn't anything wrong then or when I last saved and then quit the game, so it came to me as a complete surprise when I started up my game again today and noticed everything was just as wrong as it could be. I do use the "testingcheatsenabled true" cheat while playing to teleport my sims, 'cause travelling from one spot to another takes up so much time of the day otherwise, and also to buy or build something on a site that I don't own from time to time. Apart from that, I never use cheats.
I also tried creating a new game and those still work, so the problem just accurs with this one family/game.
After trying out the last solution, involving the switching of active households, the family in question just didn't live there anymore, while they still did before "saving as" and then quitting the game. After loading the new game again, the house just came up empty, as if no one ever lived there...
Hoping you'll have a miracle solution for me, but I'm quite sure it won't be that simple...
Thanks already and hope you'll get to enjoy the rest of your evening/day.