Gallery link missing

I’ve installed this plugin here – http://northdownhc.co.uk/index.php but the href of anchors is blank so obviously {=gallery.link} isn’t working. Each gallery does have its own url as you can see if you visit http://northdownhc.co.uk/index.php/gallery/ so what could be wrong? Thanks!

http://ww.wp.xz.cn/extend/plugins/ngg-sidebar-widget/