I had a patron come in yesterday with her Nook and laptop. She couldn't get a book to transfer from her laptop to the Nook. She'd had her brother look at it, and according to him, whatever was wrong was our fault.
It too me, quite literally, less than a minute to figure out what was wrong.
Simple fix: she hadn't authorized her Adobe Digital Editions. I got it authorized, and easily transferred a book from laptop to Nook.