Owen

You are absolutely correct, changing systemid to systemId does the trick.

I changed other stuff along the way to get this working (which may or
may not have also made the difference too) so if anyone is interested,
my final catalog.xml file looked like this (covering two possible dtd
locations, different to original simplified code):

<?xml version="1.0" encoding="UTF-8"?>
<catalog prefer="public" xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
    <system systemId="file://nastntx95001/common/Users/data/Maryellen.Guth/My%20Documents/Temp/LTBNA/Prod%20XML%20App/group-xml.dtd"
uri="file:///D:/Content/MTG/xml/group-xml.dtd"/>
    <system systemId="file://nastntx95001/common/Users/data/Maryellen.Guth/My%20Documents/MTG08_David/LTBNA/Prod%20XML%20App/group-xml.dtd"
uri="file:///D:/Content/MTG/xml/group-xml.dtd"/>
</catalog>

and my final command line (character > inserted to aid readability):

<!-- EXISTING COMMAND LINE -->
java -Xms512m -Xmx512m -DentityExpansionLimit=100000 >

<!-- ADDITION TO COMMAND LINE TO USE CATALOG.XML -->
-Dxml.catalog.files=file:///D:/Content/MTG/xml/catalog.xml
-Dxml.catalog.verbosity=1 >

<!-- EXISTING COMMAND LINE -->
net.sf.saxon.Transform

<!-- ADDITION TO COMMAND LINE TO USE CATALOG.XML -->
-r org.apache.xml.resolver.tools.CatalogResolver >
-x org.apache.xml.resolver.tools.ResolvingXMLReader >
-y org.apache.xml.resolver.tools.ResolvingXMLReader >

<!-- EXISTING COMMAND LINE -->
-o D:/Content/MTG/html/mtg_00.htm D:/Content/MTG/xml/mtg.xml mtg.xsl


Thanks again for the help.

Mark

> Attribute names are case sensitive so you might try systemId instead of
> systemid.