Unhappy XBMC Posters, FanArt not downloading/ showing

I have a rooted fire tv and I am running xbmc gotham on it with a mysql setup. I am able to play movies, shows but the poster and fanart are not showing up in the screen. any ideas? I have even given the xbmc su permissions using the screensaver. please help as I am looknig to replace my pc with fire tv.
thanks in advance,
Rathin
Rathnakumar