[toddross]

Thanks for the speedy reply, but it doesn't quite apply in my situation. No matter how many times I install the .pkg, the prefpane file doesn't appear in that directory. I'm told repeatedly that the preference pane already exists (and if I want to overwrite it), but the file doesn't appear. I've looked using Finder and Terminal.

I've tried installing this more than 20 times now (and rebooted three times), and the prefpane file only appeared once immediately after a reboot. This was during my fifth or sixth attempt. It hasn't shown up since.