Originally Posted by DNSB
I'd suspect that I did not update the contents.opf file to say that the new cover image was the cover image. Yes, just checked and that was what I hadn't done.
Look for this line:
<meta content="cover-image" name="cover" />
and replace it with:
<meta content="cover" name="cover" />
and Calibre should show the correct cover.
Ok, thanks, good to know!