Error in Apache Ant task with Saxon from DocBook to epub

Hello,

I'm trying to use an Apache Ant task to translate DocBook to epub via the docbook-xsl.1.76.1 stylesheets.

I receive the following error message:

 C:\Users\vogella\workspace_sapmobile\test\docbook-xsl-1.76.1\epub\docbook.xsl:1275:30: Fatal Error! The priority attribute must be absent if the match attribute is absent

     [xslt]

In input is a very simple book.xml file and my relevant build.xml looks like the following:

<target name="build-epub" depends="depends" description="Generates EPUB files from DocBook XML">

		<xslt style="${epub.stylesheet}" extension=".html" basedir="${documents}" destdir="${output.dir}">

			<include name="**/*book.xml" />

			<include name="**/*article.xml" />

			<classpath refid="saxon.class.path" />

		</xslt>

	</target>

Translation to HTML works fine.

Any suggestion would be helpful. I googled for a working example but failed to find one. Also the DocBook XSL book does not seem to contain a chapter about epub publishing.

Best regards, Lars 

-- 
Lars
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