There are a couple of things I see here.
First, registering your copy of ADE with Adobe is necessary to assure that
the software will work with libraries. Now that you've done so, ADE's ready
Next, the error getting license message can refer to the digital rights
management (DRM) software that is used by the library. Some other people
have figured this out, and here is a blog entry that may help:
There are several different software packages that are used by libraries,
but all have a common function that will expire a loaned ebook after a
certain time. That's great because you don't have to pay fines for overdue
books. And it can mean that, if you can't access your download, it will
expire without you having to do anything to it. I've read some posts here
that say it may be difficult to check out the same ebook again, because the
electronic license information gets messed up, but I don't have any
experience with it.
Hope this helps!
But more particular in this case, you are just plain out of luck. Since you registered anonymously there is no way to recover your previous state. You will just have to wait until the book expires and try again. I would suggest that you register with an AdobeID this time...
(Psst Jim! He said that he did register the second time..... )
Yep, caught that, but it I figured that the warning to everyone reading that they should register with an AdobeID, and not register anonymously is always worth repeating