My updates won't install. I can't update Onyx, Mac Informer, or Maintenance. I have a Mac Pro and I just realized that I updated my computer to Mountain Lion and it's not installed. Can you help?
Re-install Mountain Lion and update the software that needs updates.
In order to fix the problem, I recommend you erase and reinstall the OS X. You can find the necessary instructions on the official web page of Apple. After that, if you have problems updating the software, check your Internet connection. If you still can't update them, try contacting Apple Support team.