I just downloaded 3 books from my local library; 2 of them copied successfully to my Nook; the 3rd on came up with this error message. Why? thanks!
One possible reason is that the Nook is full.
One way to check is to use your file manager (Windows Explorer, Mac Finder).
Try to copy to the Nook as mounted drive using the file manager; it may give a more coherent error message.
Retrieving data ...