Well I am kind of a newbie, and paying the plex subscription (Im good with xbmx and Media Browser), I have my server up and running, am signed in and the app installed on x box one. went through all the steps and my error says No Server Found, need version .9..10.3 or higher, I have the latest just downloaded it. My Device list appears to see the X box system OS.
BUT...I have 2 servers while building my home theater. One is running 32bit Windows 7, the other running 64bit Windows 8.1.
The Windows 8.1 64bit is the one that isn't showing up as being updated, even though I've updated, restarted, uninstalled and reinstalled Plex. Quit out of the Xbox One app, my Win7 server shows up just fine and perfectly.
So, I think it could be a 64 bit problem? What OS's are you all running your servers from?
Hoping that helps.
Edit: Strangely the server shows up on my Win7 machine as .9.10, but on the Win8 machine shows as .9.9.14 Weird...
Edit 2: Apparently restarting the Xbox did wonders. Huh...