Hi all! I am... reasonably certain this is the right forum since this is an issue with moving files around and such, but I'm not 100% on that. I apologize if I'm wrong.

Anyway!

I'm running Sims 3+LN on OS X 10.6.8 with no custom content or mods currently installed (I removed it to try and resolve this issue) and can't seem to get rid of my cache files. Whenever I go to delete CASPartscache.package, etc (as recommended in the guides) I get a message saying "The operation can’t be completed because the item “CASPartscache.package” is in use." for each one.

Neither the game nor the launcher is open, I've checked 'Force Quit..." to be sure. I've also tried restarting the computer completely to make it cooperate, and I still get that message as soon as I attempt.

Halp?

Have you tried these solutions? http://support.apple.com/kb/ts1402
TS3 is well known for locking its user files, failing to unlock them on quit, and then glitching out next time it's loaded because the files are locked, on Windows. I wouldn't be surprised if it had started doing this on Mac too.

That did the trick, thank you! I don't know why it didn't occur to me to look at apple support. *facepalm*