Problem with simplelist and pdf?

["Ken Morse" <kenneth.morse@gmail.com>]

I'm seeing a problem where a simplelist doesn't appear to be formatted
correctly for FOP:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd";>
<book>
  <chapter id="ch1">
    <title>simplelist</title>
    <simplelist type="vert" columns="1">
      <member>List item 1</member>
      <member>List item 2</member>
      <member>List item 3</member>
    </simplelist>
  </chapter>
</book>

I run the commands:
tools\xsltproc --stringparam fop1.extensions 1 --stringparam hyphenate
false --output testsimplelist.fo xsl\1.72.0\fo\docbook.xsl
testsimplelist.xml

tools\fop\fop.bat -fo testsimplelist.fo -pdf testsimplelist.pdf

and get the output:
May 2, 2007 9:05:10 AM org.apache.fop.fo.FONode attributeWarning
WARNING: Warning(2/48408): fo:table, table-layout="auto" is currently
not supported by FOP
May 2, 2007 9:05:10 AM org.apache.fop.fo.PropertyList convertAttributeToProperty
SEVERE: Ignoring property: column-width="proportional-column-width(1)"
(file:///C:/DocBook/testsimplelist.fo:2:48408:
proportional-column-width() function may only be used when fo:table
has table-layout="fixed".; property:'column-width')

I'm using FOP 0.93 and the 1.72.0 version of the stylesheets on
Windows XP. Is this perhaps a problem with the FO stylesheets not
building a table for simplelist that FOP can deal with?

Ken