Ideas
House lot, it's been a while since it was availble, it could have been an alternate for a lot in game for all I know. This was before the refresh to Willow Creek and Oasis Springs NPC lots.
Just now I looked over the homes in my Gallery, and the one I'd thought was from Maxis is according to the info attached to the Duplantier Dwelling is by rdoyle. I'm going to delete it (not that I had problems with it, I only placed it a few times when the game used to ask if I wanted to place it in the world), that way I don't have any CC.
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Yesterday, I wasn't able to put anything into the garbage, but garbage in the cans could be removed, but the Sim would throw up their hands and have a 'I can't go there' symbol floating over their head. So pathing problems is part of the issue.
Today, I found out that the most I could do using the Sim is removing garbage from indoor garbage can, but then the Sim would throw up their hands and the symbol for not being able to go where they need to complete their action popped up, so there's pathing problems involved.
They'd drop the bag, but they could pick it up and put it back into the indoor garbage can if you click on the bag, but that's it. Dragging to the indoor trash can or outdoor bin does work on the garbage bags though.
As for regular dishes, I was able to drag the dishes on the dining room table over to the garbage can (and the sink), but then it would reappear back onto the same spot it was before it was moved. The dishes on the fireplace could not be moved or dragged.
Just before I posted on the forums today, I watched a guest Sim picked up the dishes to be washed, which explains why there was garbage in the trash can in the first place, it just that I didn't witness it earlier because I was focused on my single Sim on another floor of the home.
I'm going to test if it's just the Active Sim that's having the problems, or if it's everyone in the household that also has the same problems.
I used the cheats to add the guest to the family. This Sim, while Active, was able to pick up a set of dishes that was on the floor and washed the dishes.
The original Sim I made for the save game still had problems with taking out the garbage, where they drop the bag onto the floor, and clicking on clean up on the bag causes them to return it to the garbage can they took it from.
The added Sim was able to take the garbage from the can and took it to the outside garbage bin, like the original Sim was supposed to be able to do.