XOM API for Processing XML with Java

[Brian Slesinsky <brian AT slesinsky.org>]

Hi, has anyone had any success parsing OpenOffice documents with XOM?  
I get a mysterious error:

  nu.xom.ParsingException: Reference to undefined parameter entry 
"%{0};".  at line 548, column -1.

The thing is, I can't find the line that has the error.   It think it 
must be one of the files included by office.dtd, but which one?  A grep 
doesn't any such parameter entry.  It sure would be nice if XOM 
reported both file and line number for errors in included files.

Here's the relevant code.  (I set the baseURL to the directory 
containing the OpenOffice dtd because the systemID for an OpenOffice 
document is just "office.dtd", without any path.)

    private Document readOfficeDocument(File file)
        throws IOException, ParsingException {

        ZipFile zip = new ZipFile(file);
        InputStream in = 
zip.getInputStream(zip.getEntry("content.xml"));
        Builder builder = new Builder();
        URL dtdDir = new 
File("/usr/lib/openoffice/share/dtd/officedocument/1_0").toURL();
        return builder.build(in, dtdDir.toExternalForm());
    }

Thanks,
Brian