After upgrading my Windows server to 1.9.0.4252 I noticed that my scheduled recordings and program guide were missing. Further inspection it acted as if my HD Homerun was not configured with my box. It wanted me to setup the DVR again from scratch
I verified that my HDHomerun was reachable and setup correct. Even did a firmware upgrade.
Plex was not able to auto discover it and if I entered the IP manually,
I was able to set it up again.
After doing the channel mapping and pressing continue the "view program guide" stayed greyed out
If I closed it it took me back to the setup wizard for setting up the DVR again (first figure)
The program guide never appeared on my home screen.