During recent iOS 9 testing, we uncovered new Mac system requirements for iOS 9. Any Mac that uses iPads must upgrade to OS X 10.10 and Apple Configurator 1.7.2.
We have been working tirelessly to get these new instructions written and validated before the Apple Blocks return to normal schedule.
You can find the Google doc instructions here.
Please note the iOS Support Team does not handle the Mac or Casper ticket queue. If you experience any issues updating your Mac, please contact the ITS Service Desk immediately to open a ticket.