WARNING: Apple updated Apple Configurator 2 today. If you are on iTunes 12.6, do NOT update Apple Configurator 2! When you start it up after updating, it gives you this modal message: 'The required framework "AirTrafficHost" is out of date. Please update iTunes.' And it won't let you do anything after that--it forces you to close the dialog (which closes the Apple Configurator 2 window) or "retry", which fails until you install iTunes 12.7. I will not downgrade to iTunes 12.7, and Apple Configurator 2 will not run until I do, whereas before updating Apple Configurator 2 tonight, it worked fine. Anyone on iTunes 12.7 that is willing to upgrade Apple Configurator 2 to see if it still works as expected?