I would like to add my comments to this
(but sadly have no solution)
I also was able to do this previously,
(and one of the key reasons I stayed
with FIOS)
The "error" message, says "Airplay and
HDMI not supported from your Media Server.
However these are supported while streaming
Live TV from the cloud, or On Demand content"
(OK, this is progress, I can now play my DVR
content in my own house. Yay!)
However, I have 2 other STB's, why couldn't
I connect to one of those to stream, rather than
having to stream from Cloud?