I keep getting the following message after I download a book and try to open the book from my downloads (in finder) Error getting License. License Server Communication Problem: E_ACT_NOT_READY. It gives me no other information and no options other than to

I don't really know what to do. I download a book from my library and it then goes to my download folder in finder (I have a macbook pro). When I double click on the downloaded book to open, digital editions comes up and then I get the following message

Error getting License. License Server Communication Problem:

E_ACT_NOT_READY

The only option I have at that point is to close the window. My computer is registered/authorized and I have tried everything I can think of but can't get the books to download into adobe digital editions.

Help please