Trouble getting Apple TV to link to iPhoto
I have a new Apple TV and have enabled home sharing on my laptop so I can see my iTunes library via the Apple TV.
I'm trying to get Apple TV to sync with my iPhoto library as a screensaver. When I select iPhoto as an option in iTunes, I don't get the option to 'apply' that choice... Instead the button at the bottom, just says 'sync' but it doesn't do anything. My iPhoto library is on an external wireless drive so not sure if that's part of my problem? The Apple TV can see my photo stream photos so it seems to just be an iPhoto / Apple TV connection issue...
Can anyone help?
Thanks!
MacBook, Mac OS X (10.7.5)