Exception from service object: org.apache.xerces.framework.XMLParser

Hi, 

  I deploy a soap server side as a web application in WAS5.1, and when i 
called the client side 
it appears the exception like the title, anyone's help is appreciated. 

  This is the place to throw this exception, i googled and found no any 
useful infos, 

    /**
     * to parse the file to java doc created date:(2002-11-30 14:32:21)
     * 
     * @param xmlPath
     *            java.lang.String
     * @exception om.ibm.tct.api.exception.ServerException
     * 
     */
    private void parserXML(String newXmlPath)
            throws com.ibm.tct.api.exception.ServerException {
        try {
            DOMParser parser = new DOMParser();
            File xmlFile = new File(newXmlPath);
            InputStream fileStream = new FileInputStream(xmlFile);
            Reader streamReader = new InputStreamReader(fileStream, 
ENCODE);
            InputSource inputSource = new InputSource(streamReader);
            parser.parse(inputSource);
            doc = parser.getDocument();

        } catch (FileNotFoundException fe) {

            throw new 
com.ibm.tct.api.exception.ServerException(fe.getMessage());
        } catch (UnsupportedEncodingException ce) {

            throw new 
com.ibm.tct.api.exception.ServerException(ce.getMessage());
        } catch (SAXException se) {

            throw new 
com.ibm.tct.api.exception.ServerException(se.getMessage());
        } catch (IOException ioe) {

            throw new com.ibm.tct.api.exception.ServerException(ioe
                    .getMessage());
        } catch (Exception e) {

            throw new 
com.ibm.tct.api.exception.ServerException(e.getMessage());
        }
    }


Thanks
Tao