[Plugin: Skitter Slideshow] Skitter slideshow displays images in a list without styles

http://wordpress.org/extend/plugins/wp-skitter-slideshow/
Hi,

We’ve successfully installed the skitter slideshow on 2 websites but the third just displays the images in a list (ul) with no styles or javascript. We don’t have any other plugins installed so I am wondering what could be causing the conflict. Has anyone else had this issue?