Hyperlinks to the site don't work...

[blank]

I tried to link to the site on a forum, but clicking on the link from the forum thread sends you to this page:

(Page Title: 401 Gone)
Gone
The requested resource
/webuilder/
is no longer available on this server and there is no forwarding address. Please remove all references to this resource.

This happens for links to any page on the site...