Originally Posted by Pixie25
WARNING OEBPS/content.opf 6 24 title element is empty
ERROR OEBPS/content.opf 18 46 character content of element "dc:identifier" invalid; must be a string with length at least 1 (actual length was 0)
Used Indesign CS 5.5 to create.
Maybe you missed to fill in some options before creating your epub ?
You may try sigil to correct it, it has a metadata-editor