i just updated to 10.9.2 and now when i try and airplay mirror to my Apple TV, it sends the audio but just shows a black screen and i can't drag anything to it. It doesn't show any of the options for external displays in the displays section of System Preferences.
Any ideas? i tried reapplying the combo update with no luck
I have a solution for all you suffering from this problem to try. There is an Airparrot file, at least I think it is an Airparrot file as it is referred on the Airparrot site, that is called:
and it resides at: System/Library/Extensions
I have just moved this file to trash rebooted and I have got back Mirroring in Airplay.
I had previously installed Airparrot on a system I migrated to my 27 inch late 2013 iMac running Mavericks 10.9.2 and although I thought I had deleted Airparrot fully prior to the migration clearly I had not.