appletv not finding my mac

since the latest update my appletv no longer see's my mac mini across my wifi network. I made sure both the appletv and the mac mini/itunes were all up to date versions, restarted both. Double checked the wifi (my iphone/ipad both see my mac mini's itunes), double checked that the appletv is on the same network as the mac etc but with no joy.

Any ideas?