creativebookbuilder

Open full view…

EPUB Validator error message: html extension should be xhtml

warrengeoffreyopheim
Tue, 20 Dec 2016 04:40:55 GMT

I get this message when running my CBB generated book through the EPUB Validator: "XHTML Content Document file name 'cover.html' should have the extension '.xhtml'." Where can I find info on how to correct this? Not finding much via Google. Thank you!