Re: Sims 3: My Sim can’t interact with anything
@HelloThere1221 Your post was moved to the Sims 3 section.
Since the problem is contained to a single sim, moving that sim out and back in again may help. In Edit Town, you can split that sim off and move him or her to a separate house. Then use "save as" to rename the save (so you have a backup if you need to revert), quit, clear your cache files, reload, and move that sim back in. It's probably a good idea to "save as" again, quit, delete the cache files, and reload once more to see if the problem is gone.
This is the best way to reset a sim without mods, but it doesn't always work. If your sim is still borked, you may need to get rid of them and replace them. There are a couple of ways to do this, depending on how invested you are in the sim.