[SteffenH]

The <guide> section is completly missing. All else looks as you describe.

Originally Posted by Jeff L

Calibre uses the <guide> section of the OPF to identify the cover page. The page should also be in the <manifest> and its "id" listed as the first item in the <spine> section.

Right click on the epub in Calibre and use the Tweak Book option to view the OPF file. See if it looks like this:

<manifest>

<item href="filename.html" id="cover" media-type="application/xhtml+xml"/>

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.

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</manifest>


<spine>

<itemref idref="cover"/>

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</spine>


<guide>

<reference href="filename.html" title="Cover" type="cover"/>

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</guide>