Insert, Update not working
The good news is that I've got it working; the bad is that I have no idea how which is not very helpful to anyone!
I stripped the page right down the basic HTML layout code and then started from scratch adding the dynamic elements from WebAsssit. This time it worked.
As for your last suggestion Ray, regarding Create a Site I did have one created and pages were saved into the site's root.
Anyway, thanks for the help.