I bought a textbook that came with a free digital edition. I downloaded it, then tried to load it into Digital Editions (which I registered to my account). The texbook almost finished importing, then at the very end gave me an error message that said "[The name of the book]: Document is not licensed for this device type." The textbook is published by Aspen Law. I'm running Mac OS X 10.7.1 (Lion). Has anyone else had a similar issue or know of a resolution?
I've looked at other forum posts, and my situation seems remarkable like this one: