ADE recognizes my Hanvon E-Reader and I can successfully drag an E-book over to the left and place it onto my E-reader. It downloads and everything appears to be fine, and I can even click on my device and open the E-book I've put there. But, when I disconnect the E-reader from the computer and try to open the e-pub file it always says there is an error. I've tried as many ways as I can think of, but my E-reader won't open any file that was downloaded using ADE. Any advice please?