Membership services shortcode causing problems

Hi
I have tried to implement a membership services page, that embeds the [ms-membership-signup] shortcode, so that I have just one page that explains what the membership levels are and then shows the Membership options.

http://cloudbestpractices.net/about/ecosystem-membership/

This is causing two problems:

1) When you click one of the 'Signup' buttons it doesn't go anywhere.

2) When you are logged on and click to the page, it doesn't show it, it re-directs to http://cloudbestpractices.net/memberships/

So I've screwed up somewhere...

thanks, Neil.