Editoria produces only valid EPUB from its export. To validate we run the output against the Daisy consortiums epubcheck. However the publicly available epubcheck linked from Daisy/IDPF is running epubcheck 4.2.1 and it reports errors which are incorrect.
So..we had the problem that Editoria, running the latest epubchecker, was producing valid epubs but the public epubchecker site was reporting errors!
So… we asked the awesome folks at Cloud68 if they would set up an epubcheck 4.2.2 and they did… free to anyone to use:
And now the results from Editoria look like this 🙂