Quote:
Originally Posted by kalco
Error / NAV: Fixed Layout Epubs must have the "landmarks" section in the nav document, in which at least the attribute epub:type=bodymatter has been assigned. It defines the beginning of the main text.
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You
might be able to fix this problem with Sigil by right-clicking the first chapter and selecting Add Semantics > Bodymatter. (This'll add the missing landmark entry.)
Quote:
Originally Posted by kalco
ERROR ITMS-9000: Invalid prefix attribute in root (package) element of the OPF file. Please supply a prefix attribute with valid rendition value in root element of the OPF file
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Check the <package> tag in the .opf file. Reflowable Apple Books usually have the following package tag:
<package version="3.0" unique-identifier="PrimaryID" xml:lang="en" prefix="ibooks: http://vocabulary.itunes.apple.com/rdf/ibooks/vocabulary-extensions-1.0/" xmlns="http://www.idpf.org/2007/opf">
If you've edited the book with Calibre, it
might contain a Calibre namespace reference, which you
might have to remove along with all custom Calibre metadata entries.