Docbbok -> WordML (chapter encountered in book, but no template matches)

Hi.

I have tried the how-to from 
http://www.explain.com.au/oss/docbook/index.html but without success (I 
tried 1.71.1 and the snapshot of today):

C:\Programme\docbook\docbook-xsl-snapshot\wordml>c:\Programme\docbook\libxslt-1.1.17.win32\bin\xsltproc.exe 
-o c:\documentation.wxml --stringparam wordml.template template.xml 
docbook.xsl c:\documentation.xml
chapter encountered in book, but no template matches.

Same problem when using Xalan.

Can anybody help me?

JOERN