Missing art in Mythvideo "Television" menu

[Mario Di Nicola]

When entering the Media Library > Watch Videos menu you're presented with a choice of watching Movies or Television. The movies category displays cover and fan art correctly using the first movie in the list while the television category displays only the mv_browse_unknown.png image. Inside the television category all of the entries I have include fanart, coverart, and some screenshots. I've attached a small .png illustrating the problem.