I found this thread while looking for a solution but still haven't found one so I'm posting my scenario!
eCard 4.5 is working fine. But, the eCart Object button on the insert toolbar doesn't do anything. If I create a new page I can't add the object. I've done a number of sites and I have to keep copying/pasting code from other pages to get the object there but I figured I should make contact to see why it's not working the way it should.
I have DW/CS3 latest build running on XP Pro.