I have a book created on a Mac in InDesign CS5 which I export book to epub with links. When I use the idpf epub validator it gives me the following warning. file: OEBPS/toc.ncx, message: meta@dtb:uid content ‘978-1-62397-009-3’ should conform to unique-identifier in content.opf:‘urn:uuid:978-1-62397-009-3’ I was told to report this as a bug. I am unable to publish this book with Barnes & Noble unless I fix the problem. I do not know anything about writing code & any help would be appreciated.
Would it be possible to open the document in CS6 or CC (better) and export to EPUB from there?
There was a similar issue reported a few months ago. You'll avoid the error if you don't enter the ISBN as a unique identifier which is an internal identifier Indesign creates when exporting to ePub. (in versions previous to CC). See this thread for more details: http://forums.adobe.com/message/5556215#5556215