Think you get all the dead gnomes from around the world, they are a handy way of getting more dosh.

I remembered seeing this elsewhere http://www.modthesims.info/showthread.php?t=448064

All world files show as corrupt if you run them through the cleaner (custard) by Delphy, but they are not corrupt. Try downloading your original file again and don't run it through the cleaner.

I'm having the same problem loading a neighbourhood- straight crash.  Loads okay with whole mods folder removed.

I've had the pool thing, had the sound loop problem too, the only noise was the annoying whine of the harvester and had to shut game to stop it. I also had a sim ht by a meteor whilst using the harvester and their ghost had the harvester sticking out the front of their body- which I found amusing.  Will check to see if harvester still causing problems later.

Twallan has a debugenabler mod which has a reset walk option, this cures the running bug.

Happens to me when a neighbourhood starts using loads of memory, usually an indication that it is about to explode and it's time to evacuate.

When I had weird numbers and things similar to that it turned out to be a hack conflict. Try testing in Delphy's Dashboard.

I've had the hair problem on aging up, but not the mirror or dressier not loading. I ran Delphys Dashboard and it found a couple of hairs were causing conflicts, not had any problems since then.

I spotted one who day and night floated outside the science building, he must have died at work. I "reset sim" and he came back to life and then died with no problem a few sim weeks later 

Happens to me too, I figured it was books that they no longer had access to the bookcases that they came from that they couldn't put away, as I had one sim who jumped in car and drove to her parents house, put book away there and drove back home again    Now I find it easier just to drag and drop from inventory to  bookcase, saves time and effort