I got the following error message when I clicked on ADD TO LIBRARY
Adobe DRM error
System 7
State 4
Class 15
Code 31
Message:error on response from server.
Your Adobe software could not be activated.
HTTP error on Adobe DRM activator request.
Adobe DRM activator error
Client code 31.
HTTP code 556
Fault location 15.
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oh and the version of Digital Editions that I have is 1.7.2 found that out when I tried to download from the link.