Hello
I have the same problem, uploading the .oam package and using shortcode on the page, the images don’t show. Firebug says “Failed to load the given url”
element.style {
background-image: url("images/my-pic.png");
If I change the url with Firebug, everything works. I am running WordPress locally with MAMP. I need to get this to work before I update the real site.