I'm just runningt eh trial of this module. the first postcard I sent (from the SuperUser account) went without problem. The I tested by sending from someone not signed in - this gave me the 404 error. Unfortunately, ALL attempts to send a card since then end in the 404 error - whether it's the SuperUser account, a normal user account or not logged in. I haven't changed anything (except the user).
I checked the images I've chosen for cards - all are files on my website, but when I look at them again, the URL is selected (and the external address of the image is displayed) - why?

What's happening? why can't I send a postcard?

Thanks for any help you can give

Suzanne

I still can't get this module to work - it all looks OK till the Submit button is clicked - also, although I thought the first attempt had gone well, it only appeared to - nothing arrived at the destination email address. I've attempted to use the demo one on your site, but that doesn't actually send anything to my gmail account either.