Ran into this problem just now, when I try to turn off Auto Power Idle my Sims jump out of whatever they were doing. Switching to testing mode and trying again confirmed that there was a problem with the interaction, hence the attached log.
I know, why would I want to turn it off?
![Smiley](/smf/Smileys/default/smiley.gif)
No real reason, I'm just curious why it isn't working in this particular instance.
I've also noticed that the offswitch doesn't work at college either, though I didn't get an error message in that case.