I've had this problem for quite a while, even before the Shield v9 update, but never got around to writing about it because I don't deal with it too often. I currently have the DVR Server running on a Shield Pro (v9.0.2, 1TB SSD as External Storage) and the Channels Client is running on the same Shield. The problem is: when I reboot the Shield and restart the Channels Client from the Shield home screen, I get the message 'Preparing Your TV' then a failure to connect to the DVR Server on the same box. I get the screen to 'Try Again' or 'Connect to Channels DVR'. 'Try Again' never works -- the icon keeps spinning until I hit the back button. I have to select 'Connect to Channels DVR' and enter the IP address of the Shield. After that, no problems backing out to the Shield Home screen and back in to Channels -- until I reboot the Shield again.
I have two other Shields running the Channels Client and they have no problem immediately connecting to the DVR Server after a Server reboot. Also, when I had the DVR Server running under linux on my Media Server, none of the Shields ever had a problem connecting to the DVR Server after a linux reboot. This problem is specific to re-starting the Channels Client on the Shield running the DVR Server after a reboot.
Anyone else have this problem? Any thoughts?