Error: There was a problem saving your DVR. Please try again

Hi. With much anticipation (and frustration with MediaPortal) I tried plex today with a paid subscription as I want the DVR features.

It shows plenty of promise, but when It fails during the DVR setup process. When I get to the EPG page, I select the EPG Provider (Freeview NZ), it maps correctly, but when I click continue, it displays the error “There was a problem saving your DVR. Please try again”.

Any guidance appreciated please
Peter