First off, EXCELLENT Plugin. Thank you all so much for this!
My only problem is something I'm sure I am doing wrong or somehow set wrong. I have a book on Amazon and at first, I didn't get a cover thumbnail over the Buy Now button. I did something and it suddenly re-appeared. The next day I was deleting images that I wasn't using to better organize my media files and I deleted the one that I guess was being used as the thumbnail and back to square one. Hilarity ensued.
So how do I set the cover thumbnail? I didn't change/modify any code and the only plugins I am running are the ones that come stock with this version of WordPress, Totally Booked and Simple Page Ordering.
Thank you all so much for your help and Much Love!