Ultimate Facebook simply not working on one site

The ultimate facebook plugin or images is installed on http://www.philosophy.org but is not working at all. With the module published it only shows login text but no link and no images in posts.

Just to verify, I've followed the same procedure on another site, http://www.veteranscarpet.com and it seems to work very well.

Philosophy.org was originally built on a local MAMP installation and then uploaded to the live location before facebook was installed or attempted. We're using a YooTheme theme and maybe there's some sort of conflict. It also uses marketpress for the store.

Any ideas?