The "All Products", "Ebooks" and "Upgrade Discounts" show correctly list of all books, or all books with print upgrade discounts, respectively. When I click on any folder, I see an *empty* list. I expect to see the books I put (with drag'n'drop) to a folder.
It worked correctly a few days ago, when I last checked it. Now it doesn't work.
Help get this topic noticed by sharing it on Twitter, Facebook, or email.