Gallery links in Album not working

The problem I’m having is that the links a NextGen album generates to galleries and pics keep getting corrupted as soon as they are clicked on. So this page (see link below) has an album containing 2 galleries. if you click on a gallery you get taken to the gallery page, which consist of thumbnails (the page is generated by NextGen). If you click on a thumbnail the link is instantly re-written and, rather than taking you to the main picture takes you back to the page with the two galleries listed, and now the links in the galleries no longer work. (If I go to another menu item and then return to the album page the links are now correct, however the fault still occurs if I clink on a gallery thumbnail).
https://dev.twosixtwo.co.uk/jfleming/cartoons/
The correct link to the gallery is like this;
Dev.twosixtwo.co.uk/jfleming/cartoons/nggallery/cartoons/postcards
The corrupted link after clicking on a thumbnail is;
Dev.twosixtwo.co.uk/jfleming/cartoons/nggallery/pid–183/cartoons/postcards
I’ve updated disabled all plugins and themes and reverted to my parent theme, twentyeleven.