moveobjects off ?

Thanks both. I deleted the car and so far, so side effects. I've loaded both apartments after that, and no issues with either.

Is there any way to add a dog or cat to a casual group? My Sims feel bad having to leave them home during outings.

"Bark! Bark bark bark bark, bark bark Soma 44" PancakeTek Television bark bark bark! Bark bark!"

My sim throws parties and no one ever comes even though they are best friends. Every single time I have to call sims over after throwing the party just to make sure someone comes. If I invite a household, only the sim called ever shows up. What's gone wrong here? It wasn't like that when they first moved in, now it's like that constantly.

More often than not, the interaction itself fails. I'll throw a party, it says guests are invited on the popup, and after some time nothing happens and the "throw party" interaction is available again as if I never threw a party.

That sounds like a mod conflict. If someone's not coming to the party, you should get a pop-up saying that you're missing some party guests. This sounds like the scenario is simply not starting.