I've been using ADE for quite some time without any problems. Lately it has been freezing. Now, although all my books are still listed I get a message that says I have either deleted or moved them. I took the program off my computer and then reinstalled. The books are still listed but now I get a message that says I have no permission to transfer the books onto the sony e-reader. Many of these books I have transferred over previously. Does anyone know what is going on and can anyone help?