Hello, I want to chunk my document to HTML using html/chunk.xsl from the Docbook Stylesheets bundled with Oxygen 3.0. I have created a customization layer (html-cust.xsl) that does an xsl:import of chunk.xsl and xsl:include of customizations that are common to HTML and FO (common-cust.xsl). The part we're interested in looks like this: <?xml version="1.0" encoding="UTF-8" ?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <!-- This file is a customization layer for HTML only --> <!-- ======================= --> <!-- Imports --> <xsl:import href="/home/sean/apps/oxygen/docbook/xsl/html/chunk.xsl"/> <xsl:include href="common-cust.xsl"/> When I validate this xsl file I get the following error: F javax.xml.transform.TransformerException: ElemTemplateElement error: chunk-element-content Yet when I replace chunk.xsl with html/docbook.xsl the xsl is valid. Any ideas anyone? -- Sean Wheller