Thanks for responding. The attached epub file trumps-tariff.epub is a file that will not show the cover image on the Nook Library or Recent Read. It boots slow on my Nook, my only reader. I believe I modified this from a Smashwords meatgrinder file but am not sure. I generally upload the Smashwords standard Styles Sheet, even if starting from scratch. The inline ones from an html file seem to be a problem. I have lots of problems converting html files with epub validation. Let me know if your reader has the same problems. Otherwise, the files work fairly OK on my computer Adobe Digital Edition, but the cover image hangs up for a bit, the line on the bottom hangs up, freezes, when I try to go to the cover image, when using a Sigil saved file. The cover image does always show up in my readers.
I generally code in CV, and if I do not, always check CV after using BV. I did not know that 0.7.4 was not the most recent Sigil. Last I checked, it seemed to be. Is there a paid version? Anyway, I'll check for a later version. Later