I couldn't get my AppleTV device to connect to my Optoma HD DLP projector via my Pioneer AV receiver, because the HDMI coming from my Apple TV device couldn't downscale to component, which is how my Optoma HD DLP projector is connected to my Pioneer AV receiver.
So I had to buy an HDMI>Component converter FFS.
Fortunately, my Panasonic LCD HDTV upstairs, has an HDMI port and I didn't have the same issues with it.
Unfortunately, because I've got the Apple TV device operating properly, it means that my Panasonic BLURAY recorder is now only used to watch tv shows that I've recorded and about 1500 songs that I've recorded off Rage, but not BluRay discs that I used to hire from the video store.
Talk about opening a can of worms.........