I've been unable to read any of my books from my digitial editions, I'm not sure if it is because they are PDF files, or if I have locked something. I will be in the digitial editions menu and it lists all my books and I click to start reading any of them and it has the hourglass thingie and once its done it doesn't go to the book like it usually does. Can anyone tell me if something is accidently locked or if you know of something I could do to begin reading again??? I've been trying to get some reading time in today but, something has halted that