Just an FYI for anyone else that may be having a similar problem as the OP of this thread. I was doing the same thing the OP was doing, and for some reason NOTHING I did worked to fix my EPG. I did a Reset PVR and Reset EPG about a hundred times, uninstalled, reinstalled. But for some reason my EPG was half missing.
Finally after reading that he went into the Channel Manager, I noticed that I had not changed the channel names in the TVServer from their defaults. In doing this I realized that there were several parentheses ( ) and one period, that I then went and removed.
BINGO suddenly the TV guide was fixed