Yeah, that must have been it. I thought I clean installered it, but I guess I must have missed something.
I got the invisible trashcan on my other lots, as soon as I had placed one of Jessla's lots. Mean sims would knock the blasted thing over and then I couldn't direct my playables to pick it up. I deleted all the hacks that had crept in, for sanity's sake.
I haven't had problems picking up the garbage can - it's just a matter of knowing where to click and realizing that it's been kicked over.
Pictures?
They lower the bag into the invisible can, and then the bag sort of dissipates into thin air. Maybe I'm just easily amused.