Have you turned testing cheats on?
Testing cheats is always on these days.
This is going to sound weird, but check that everything is accessible (especially toilets) to sims. I have a community lot I made that I put the sink and toilet in the wrong position and sims just get stuck until fixed.
Yes; I haven't moved anything since everything was normal. Actually, I think it suddenly happened in the middle of normal gameplay - I saved and quit and came back later to see if anything had changed.
Force an error on objects off lot; it will take a bunch of error windows to click on, but it should do the trick.
Thanks - I'll try that. ETA: That fixed it. Also, is there
anything in TS2 that is not implemented as an object?