For those upgrading from Lion and having the CLLocationManager issues (e.g. Security & Privacy not working, Reminder app not working) you can reinstall these packages from the retail disc:
Essentials.pkg (may not be necessary, but I did it)
They're in the SharedSupport folder of the InstallESD.dmg (IIRC). During the install of BaseSystemBinaries.pkg I had to temporarily remove AppleSmartBatteryManager.kext from S/L/E and put it back after (didn't bother running Kext utility when moving it out).
WARNING: after BaseSystemBinaries.pkg you need to reinstall Chameleon. I also had to copy over the AppleIntelCPUPowerManagement.kext too.
I would reference the post I found this information on, but I can no longer find it!
Just found out sound had gone - had to copy AppleHDA.kext back too.