Actually, you do need a namespace in your output, just not the null namespace. Epub3 output elements must be in the XHTML namespace. Any customization layer must declare the default output namespace like this:
<xsl:stylesheet xmlns="http://www.w3.org/1999/xhtml" ... Bob Stayton Sagehill Enterprises b...@sagehill.net ----- Original Message ----- From: Carlos Araya To: docbook-apps@lists.oasis-open.org Sent: Tuesday, April 17, 2012 11:34 AM Subject: [docbook-apps] Unwanted xmlns in attribute for ePub3 template I am working with ePub3 ebooks and have found the following problem. I've added the template below to my customization layer for ePub3 publishing <xsl:template name="user.manifest.items"> <item id="font1" href="DejaVuSansMono.ttf" media-type="font/truetype"/> <item id="font2" href="GraublauWeb.otf" media-type="font/opentype"/> <item id="font3" href="GraublauWebBold.otf" media-type="font/opentype"/> </xsl:template> It adds the items as requested but it inserts an empty xmlns="" declaration. The resulting lines in the manifest file look like this: <item xmlns="" id="font1" href="DejaVuSansMono.ttf" media-type="font/truetype"/> <item xmlns="" id="font2" href="GraublauWeb.otf" media-type="font/opentype"/> <item xmlns="" id="font3" href="GraublauWebBold.otf" media-type="font/opentype"/> and produces the following error in epubcheck B4 [java] ERROR: docbook-howto.epub/OEBPS/package.opf(36,86): element "item" not allowed anywhere; expected the element end-tag or element "item" (with xmlns="http://www.idpf.org/2007/opf") Is there a way to remove the namespace declaration or a template that I can edit to make the change locally?