I am still having issues with being able to open an existing epub or downloading one via the acsm file link. Clicking on either of those file types opens ADE but will not display or download an epub. I can add to the library, but the epubs that I do have are expired.
Anyway in an attempt to troubleshoot I have deleted and reinstalled ADE a couple times. It shows authorized to the correct email address. I created a second adobe account in hopes that would allow me to bypass any settings issues with the current account. But when I try the shift/command/d combo nothing happens. Is there another way to deauthorize ADE on the computer? And will doing so mess with my installation of Photoshop CS5 that I have authorized under the same account email address?