[Plugin: wordTube] playlist scroll bar covered up when no thumbnails

i have several playlists and several players on several pages. none of the videos i have did i add thumbnails to. now the playlist has all the videos in it, but the scroll bar to move the playlist up and down is covered up. not sure if this is a jwplayer issue or wordtube, but any help would be appricicated

http://wordpress.org/extend/plugins/wordtube/