I have the exact same problem. I purchased a new ebook from ebook.com. During the download I was prompted to update my Digital Editions to version 1.7. I followed the instructions and while at the Adobe site, I had to create an Abode ID for authorization. I did that, then continued to complete the installation process. The installation was successful and I was able to download the ebook and start reading it. I then decided to read some of my previously purchased books in my Library and they ALL showed error with the following error message:
Document is licensed for a different user account
I have more then 10 books that I now can not access since I did the upgrade. Please provide a solution to this problem.
Mac OS X Version 10.5.6
Adobe Digital Editions Version 1.7.1079
Yeah I have the same problem only I have $350 worth of ebooks from ebooks.com that I can't open with pdg. I can with digital editions but I need to open them in pdf so I can convert them to another format so my ebook, myebook, can read it. I have windows.