[Plugin: Facebook Comments for WordPress] Facebook comments not showing.

Hi,

Your plugin is awesome.

I have used this plugin in two sites.
1. http://pofio.com
2. http://vueso.com

however its working fine in 1st one whereas not working in 2nd one and get somekind of error in error console “FB not defined” for FB.Event.subscribe(‘comments.add’, addedComment);

Please check below urls
1. http://pofio.com/members/pofi1671/
2. http://vueso.com/members/vues9189/

Please help me to figure out this , so i make it to working fine in 2nd site also.

Thanks

http://wordpress.org/extend/plugins/facebook-comments-for-wordpress/