BigNoid/Aeon-Nox — comment on commit 4eee18912c561ed66857a00d60bf5ed3800aef90
File:  line 0
By MartijnKaijser:

XBMC doesn't support season banner by default I think. Only TV show banner and season poster.
I did push an update to enable them last week however there was a problem in repo that broke all skins. So we reverted it.

This one has them enabled:
https://github.com/downloads/paddycarey/script.artwork.downloader/script.artwork.downloader-Eden(1.0.7)-RC5.zip

Some info:
http://forum.xbmc.org/showpost.php?p=988823&postcount=142
http://forum.xbmc.org/showpost.php?p=1003812&postcount=161