No template matches xi:include

["Roger Weinheimer" <RogerW@onyx.com>]

Title: No template matches xi:include

I get this error when I apply associated stylesheet to my xml document. I searched the archives but got zero hits. Am I bleeding edge or what? :)

Here is the xml doc:
<!--?xml-stylesheet href=""file:///c:/gnu/emacs-21.3/site-lisp/xae-1.0beta8/doctypes/docbook/styles/docbook/html/docbook.xsl" type="text/xsl"?-->

<?xml-stylesheet href=""file:///c:/gnu/emacs-21.3/site-lisp/xae-1.0beta8/doctypes/docbook/styles/docbook/html/chunk.xsl" type="text/xsl"?>

<book>
  <title>ToddR 1x1s</title>
  <subtitle>Rogerw status reports</subtitle>
  <bookinfo>
    <author>RogerW</author>
</bookinfo>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href=""1x1_20050401.xml"/>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href=""1x1_20050408.xml"/>
<!--&oxo20050401;
&oxo20050408;-->
</book>

Here is the html output:
ToddR 1x1s
Rogerw status reports
<xi:include></xi:include><xi:include></xi:include>

Here is the XML Tool Server output:
apply_assoc_stylesheet file:///c:/rlw/toddr_1x1s.xml c:/rlw/toddr_1x1s.html
Transforming document...

No template matches xi:include.
No template matches xi:include.
Writing index.html for book
Done.

Can someone tell me how to integrate xinclude with xae? From Bob Stayton's book on DocBook XSL, I assume that I need to add some options to use Xerces xinclude support in the java command, but I haven't figured out where to make that change. I know his book is not about xae. Can you tell me if I'm on the right track? Please do not assume I know much about java, docbook, or xae. I also tried this question (not verbatim) on the xae mailing list, but I do not know how active it is. Thanks.