org.apache.xml.serialize - problem in linux

[Matias Gel]

Hi all, i'm trying to generate a xml from a oodbms to make a pdf by jasperreport..... everythinks is working fine!! under windows!! :-( .. but when i try to update the real site that i have in linux its giveme an error..... i'm using a server in Fedora core 4, the webserver is Jetty, the error its when is trying to open the file, the file is "/usr/reports/5.xml", my code is:

//XML 
  public static final void generateXMLAgencySold(GbjCollection  collection,String xmlFile)
  {
    try
    {
      FileOutputStream fos = new FileOutputStream(xmlFile);
      // XERCES 1 or 2 additionnal classes.
      OutputFormat of = new OutputFormat("XML","ISO-8859-1",true);
      of.setIndent(1);
      of.setIndenting(true);
     // of.setDoctype(null,"users.dtd");
      XMLSerializer serializer = new XMLSerializer(fos,of);
      // SAX2.0 ContentHandler.
//the problem is here when i try to serialize 
//!!!!!!!!!!!!!!!!!!!
      ContentHandler hd = serializer.asContentHandler();
      hd.startDocument();
 

and the error that i get from jetty is: org.apache.xml.serialize.EncodingInfo: class definition not found

think that its a problem with linux file i dont know... the lib is ok an the class is found you can see that becouse the place where is the error. I have an other error like this when i traying to file my report with the xml. The first think that i thought was that the problem is with the linux permision files... but i made a trial where i open a txt file in the same place of the xml and i write it under jetty and its working well... so... i need help!!! thanks