My problem is manyfold! I have a Pandigital novel and it can't open any Epub's, not even library books I've checked out. I just uninstalled the most recent version of ADE and loaded the older 1.7 version based on a comment I read in the forum. I used to get a message that said that my device wasn't authorized, but it was authorized within the ADE app. Now I get a message that says that I don't have a license to open the book. I'm assuming that means the same basic thing?? Also, this may seem dumb, but are these books supposed to open in the B &Noble reading app that came pre-loaded on the reader? Or are they supposed to open somewhere else?