I appreciate the assistance. I've about decided not to worry about it. It's kind of awkward to view details on the nook anyway because the touchscreen menu is pretty slow so I usually know what I want to read on the nook before I open something anyway.
It's just got my mind all torn up because it was working one minute and not the next, and I don't know what could have changed in my Calibre library to cause it. My biggest concern is that I've introduced some unrecognized glitch into my library by messing around with the news feeds and date stuff and that it's going to come back and bite me later when I forget all about this and what *might* have started it.
I'll probably just keep troubleshooting and update if and when I ever figure it out.