unable to use schedulereport webservice ?

Hello Everybody
I'm using BI Publisher web services to create a java program which schedules reports.
I've tried to schedule reports to be sent by email or printer but ... it didn't work.

I have the following error :
javax.xml.ws.soap.SOAPFaultException: org.xml.sax.SAXException: SimpleDeserializer encountered a child element, which is NOT expected, in something it was trying to deserialize.

The code I've used is the following :

package com.oracle.xmlns.oxp.service.publicreportservice;


import java.awt.Desktop;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import java.io.IOException;