Hi, In the installation requirements for cocoon 2 inside JBoss-Tomcat, it is said that all XML libraries that aren't Xerces need to be removed from the jboss/lib and tomcat/lib directories. 1) I'm using XmlDocument in many EJBs, so I need to have it; besides, I don't know why, but serializing an org.w3d.dom.Document with Xerces is INCREDIBLY complex ! 2) some sun XML APIs are in j2ee.jar anyway, so what's the point here ? Aurélien PS: While I'm at it, I'm getting a TransformerFactory with a standard constructor, like so: tFactory = new org.apache.xalan.processor.TransformerFactoryImpl (); ....which isn't the standard way of doing this (normally you would have to use newInstance () on some abstract class). Any clues ? --------------------------------------------------------------------- Please check that your question has not already been answered in the FAQ before posting. <http://xml.apache.org/cocoon/faqs.html> To unsubscribe, e-mail: <[EMAIL PROTECTED]> For additional commands, e-mail: <[EMAIL PROTECTED]>