I just ran into the same error, but in a different way -- using JOSSO and JBOSS 4.2.2.GA and PORTAL in the same server. Here's what I did to remove the error from the server log. I did a search for files named wsdl4j*.jar under server/default/deploy and found one having version 1.6.2 (implementation version in the manifest.mf inside the jar) and two having version 1.5.1. I replaced the 1.5.1 versions with the 1.6.2 version, delivering consistency across these 3 locations (listed below). The implication is that across all deployed sars and ears there must be jar version consistency.(?) \jboss-4.2.2.GA_josso-1.7\server\default\deploy\jbossws.sar \jboss-4.2.2.GA_josso-1.7\server\default\deploy\josso.ear\josso.war\WEB-INF\lib \jboss-4.2.2.GA_josso-1.7\server\default\deploy\jboss-web.deployer View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4137941#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...