Can't open book even though authenticated in ADE

I cannot open book in ADE.  The title is grayed out. I have erased the authorization, uninstalled ADE, deleted .exe file, deleted ADEPT via REDEDIT, and emptied the recycle bin. Then I restart my computer. Download ADE software and authenticate.  I download a book from Overdrive.  Again, grayed out and can't open.  Any suggestions?