Pagination displaying but 404 when clicked

Hi,

I am trying to help a friend out with their site but I cant work this one out. The pagination displays OK using the template code option but when you click any of the pages you get a 404.

I have permalinks set to Post name and have checked for conflicts with other plugins.

Is there something else I can check or try?

Thanks in advance!

The page I need help with: [log in to see the link]