Thanks very much for that explanation Ken.
However, I am still having problems getting the season posters to show. This is what I have in the template after following your guide:
Could you confirm if this is correct please.
The problem is that I am still only getting a frame grab as the season thumbnail instead of the season poster as I was with release 18.0.63. I am however getting "Season 1", "Season 2" etc instead of just "1" & "2" now which is good. If only I could get my season posters back.
Obviously I'm doing something wrong but I have no idea what.
Thanks