Error Message "LOAN TOKEN NOT FOUND"

When checking out an e-book from my local library, I cannot open it on my Nook Color. I download the book (.acsm file) to my Windows 10 PC. When I open it in Adobe Digital Editions v 4.5, I am able to read it within ADE and transfer the .epub file to my Nook Color. I have Authorized both my PC and Nook Color with my Adobe ID. On my Nook the file only appears in My Files in the Digital Editions folder and it does not appear in my Library. When I try to open it I get the Error Message "LOAN TOKEN NOT FOUND". I have re-installed ADE and re-authorized both PC and Device several times with the same result. Any Suggestions?