I get this error message and if I try to move the downloaded library book to my nook I get "no permission to copy document here". I was able to transfer my 1st 2 books but haven't been able to transfer any new downloads from the library. I am able to see the nook on the bookshelf but I unable to transfer anything (PDF or EPUB). I tried deactivating ADE and uninstalling it. I also removed the items from the Regedit>HKEY_CURRENT_USER>software>abobe>adept. I reinstalled ADE and still had the same problem. Anyone have any suggestions?