Originally Posted by afv011
Calibre copies a thumbnail with the book. Nookcolor does not use that thumbnail, it gets the cover from the book itself. Make sure your EPUBs actually have a cover.
This may be true, but it does not completely cover it. Some of my epubs that have covers when opened do not show them in library view. Is there a specific setting that ensures it works? about 90% of my epubs are working, but the others are not. I have tried a bunch of alterations on them but have had no luck yet.