airplay mirroring doesn't work anymore in my Macbook Pro retina display!!
It doesn't work since 3 weeks ago😠
MacBook Pro (Retina, Mid 2012), OS X Mountain Lion (10.8.1)
Did you manage to get it working again?
I have the same problem (also MBP Retina) and i could solve it by installing 10.8 again, but after some weeks ist fails again.