I'm having a repeated gray-out problem with apps on AppleTV 4. Netflix went gray for a few days and I got tired of it and rebooted a few days ago (probably Monday). Everything was normal. then Hulu went grayed out and I rebooted again yesterday (Wednesday). Today (Thursday) I find that Netflix has gone gray again. Yet another reboot... What is going on to cause repeated gray-outs within the course of a week? It's driving me crazy. As others have said, resetting fixes it -- but it shouldn't be necessary.