Books no longer show up in my Digital Editions library?

I have been using Digital Editions for a long time and now all of a sudden books aren't showing up in my DE library.  I know I have several in there.  I tried to dl a new book and it checks out of the public library OK but doesn't get fulfilled and show up in my DE library.

I am using a Windows 7 laptiop and started trying to figure this out by restarting the laptop.  Didn't help.  Then I uninstalled DE 4.5 and downloaded it again and installed it again ibut still no books.  DE says it is authenticated on this computer and has worked fine for me for the last year or so without problem.

What gives?

I'd appreciate any and all help with this issue.  This is a program I use every day.