I went through the download process in Safari and Firefox, but it kept kicking me to the Adobe web site. When I launched Adobe Digital Editions manually, reclicking the download button in the browser appeared to work — the book started loading in DE. Then I received this error:
Irritating!
Worse, when I poked around the Adobe web site looking for an update to Digital Editions, the download link was disabled. Does anyone have a working download link? Or has Adobe disabled downloads for a reason?