I don't understand your point : i have only jboss running (eclipse 3.2 closed) and i always have this exception... It seems to be a soap transmission message pb. As for the syntax for the wsrunclient with jboss-saaj.jar I only use wsrunclient echo.EchoClient because when i try -classpath jboss-saaj.jar, i have a NoClassDefFoundError (i have jboss-saaj.jar in my path) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4026438#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...