I have installed JBoss 4.2.1 GA and JBoss Messaging 1.4.0 SP1 on a Windows XP System. When I try to execute the deployQueue-Method from the example utility, an exception is thrown which is caused by java.lang.IllegalArgumentException: Unable to find operation createQueue(java.lang.String,java.lang.String) | ... 43 more | Here is the source code that causes the error (which is exactly the code from the example files): public static void deployQueue(String jndiName, InitialContext ic) throws Exception { | MBeanServerConnection mBeanServer = lookupMBeanServerProxy(ic); | | ObjectName serverObjectName = new ObjectName("jboss.messaging:service=ServerPeer"); | | String queueName = jndiName.substring(jndiName.lastIndexOf('/') + 1); | | mBeanServer.invoke(serverObjectName, "createQueue", new Object[] { queueName, jndiName }, | new String[] { "java.lang.String", "java.lang.String" }); | | System.out.println("Queue " + jndiName + " deployed"); | } | | The operation that fails is mBeanServerServer.invoke(...). It looks like something in my Eclipse execution environment is still not configured correctly. How do I check if the reference to the MBeanServer object is filled correctly? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4108002#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...