Remote app just will not work (when all else does)
I have exactly the same problem as several other people, and I've gone through all of the suggested "fixes". No firewall, on the same (open) network, newest version of Remote app (4.2), with the latest versions of ios (7.2), and all the latest version of Apple TV and iTunes. Home Sharing is on (and my iMac and my MBPro both can control the Apple TV. The Remote app, however, STILL gives me the "can't connect" to the library "check your network settings" message, or "can't find the library, turn home sharing on" message. Airplay works, and the Apple Tv and the two computer libraries show up on my iPhone in the Remote App, but it just won't work.
I'm running a 2008-model iMac, a 2009 Macbook Pro, with a 3rd Generation Apple Tv with an iPhone 5s. My wifi router is a Time Capsule model wire-connected to a Time Warner Cable internet modem (I reset both).
I de/re-installed Remote.
Anyone have any suggestions on what to do next?
iMac (20-inch Early 2008), OS X Mountain Lion (10.8.2)