Pacing an image in Rapidweaver 3.2.1

I’m trying to add an image to an older version of RW and am having problems. I haven’t used it for a while and my memory is that you just drag the image onto the page, review the page, save, then export the changes , then publish. All goes well until publishing, then when I view the page online, I get a box where the image should be with a question mark in it. Am I missing something here?