[KevinH]

That means your links to the images in your xhtml files do not match with where your images are being placed inside the epub.


Please try again without standardizing. Simply hover over each questionable image noting exactly their full path (or set Sigil's prefs to always show it). Then verify it in the opf is an *identical* match. Then search the xhtml files for that image and check that the link to the image is correct (Or use Sigil's Reports feature to do that).

For example if an image is in OEBPS/Text/ then an xhtml file colocated with it should NOT look like "../Images/blah.png"


Please report back what it tells you.