NoSuchMethodError: org/apache/xml/utils/TreeWalker

[DemeCarv]

websphere jars.jpgI am getting the error from subject when running the below code in Websphere in my RAD. It is very interesting that this code doesn't cause any error in Server. The server runs up Tomcat 6 but I must set the same code to run in Websphere. I have searched for hours in web but I didn't find nothing that I could at least give a try. I attached the libs in Tomcat and Rad in the pdf file and in the png the Websphere libs. I guess that it might exist some conflict but I have no idea why it is working in Tomcat but it is not working in Websphere.

Error message in browser:

Error 500: org/apache/xml/utils/TreeWalker.<init>(Lorg/xml/sax/ContentHandler;Lorg/apache/xpath/DOMHelperV

Error message in RAD console:
java.lang.NoSuchMethodError: org/apache/xml/utils/TreeWalker.<init>(Lorg/xml/sax/ContentHandler;Lorg/apache/xpath/DOMHelperV

at org.apache.xalan.serialize.SerializerToXML.seriali ze(SerializerToXML.java:2578)

org.apache.xalan.serialize.SerializerToXML serializertoxml = new org.apache.xalan.serialize.SerializerToXML();

My code snippet:
java.io.FileWriter filewriter = new java.io.FileWriter(file);

serializertoxml.setWriter(filewriter);

serializertoxml.serialize(node); // the error happens here

serializertoxml.flushWriter();

filewriter.write("\n");

filewriter.close();

[DemeCarv]

websphere.JPGI uploaded again the image which shows the Websphere Labs in Jpg because I guess that the png format might not be clear enough.