Creating a clean folder let me install most of my Sims 3 store things. It didn't install my Sims 3 Pets add ons (Graham's Pet Swap Shop or Atomic Age Pets...) [it said I didn't have the right expansion pack installed, but my launcher says Pets is installed.] or the Freesyle DJ Booth or Ultimate Venue and Stage objects, but I can live without these. I got everything else.
@yoshiqueshana Is Pets loading in-game? If not, that would explain why the pet-related objects wouldn't install. I think the DJ booth is tied to Showtime, so same question there. But if you're satisfied, then there's no need to pursue it further.
I just loaded the game today, and it has uninstalled everything from the store again today. I am going to try to just unstall the sims 3 and reinstall it completely.
