I just called Barnes&Noble for help. None of my books would read on my
B&N glowlight 3...not even the B&N ones. They recommended I reset it from scratch, which I did.
All works again. I reread the postings here and realized that my whole problem started with my
sideloaded books from calibre. It is most important that you
disconnect the Nook reader from calibre when you are done. Hopefully I will remember that important step next time I download and sideload a book. I am smiling again!
