Re: Lots/Sims won't load
@gemjasmine Please move your entire Sims 3 user data folder out of Documents\Electronic Arts and onto your desktop. When you launch the game, a clean folder will spawn with no content. Don't add anything to this folder, unless your existing save takes place in a store or custom world; in that case, install only that world, nothing more. Go into Saves inside the Sims 3 folder you moved, copy your save, and paste it into Saves in the new folder. Load your game and test.
If this doesn't help, let me know whether you use mods, and whether you'd be willing to try a few.