I have taken the opportunity to re-work my extension demo pages by creating a new 'demo' web site using WB. The new site can be found here. The new site includes a Support contact form, tailored to the extensions made.
I have updated all links within this forum (that I could find). Similarly I have updated the demo references within the Extensions web site and will update all links within the PDF help files as each extension is updated.
If anyone has a problem with the demo site please do contact me; any feedback will be appreciated.