Jason. I have done the changes and set it to relative to documents but it did not help. I have since opened the page, detached from the template to see if the problem was there but it wasn't. Then removed the E-cart server behavior and now the page works. So the problem is with E-cart. Dreamweaver reports the following when in design view: "An unknown error occurred when discovering dynamically related files"
If I then open it in live view I get a blank page and when I look at the code, there is only the html tag and no code.