Gallery URL /gallery/gallery/gallery added.

Hi all I have installed this plugin and its setup here:

http://www.manorproperty.info/build/gallery/

My issue is when you click say kitchens for example the location for the gallery is like so.

http://www.manorproperty.info/build/gallery/gallery/gallery/kitchens/

Is this normal or did I mus-configure something?

http://wordpress.org/extend/plugins/nextgen-gallery/