Hi All I am using JBoss-4.2.3.GA, JBoss-Messaging-1.4.0.GA And JDK1.6.0_07. I am integrated the Jboss-messaging with JBAS and deployed my Application, the server started without any problem. Added the following jar file in the client classpath jboss-messaging.jar jnpserver.jar jbossall-client.jar javassist.jar jboss-aop.jar trove.jar Whenever i am calling my client application the following error is throwing. Exception in thread "AWT-EventQueue-0" java.lang.NoSuchMethodError: org.jboss.ao | p.ClassAdvisor$1.<init>(Lorg/jboss/aop/ClassAdvisor;Lorg/jboss/aop/AspectManager | ;Lorg/jboss/aop/ClassAdvisor;Ljava/lang/Class;)V | at org.jboss.aop.ClassAdvisor.attachClass(ClassAdvisor.java:271) | at org.jboss.aop.AspectManager.initialiseClassAdvisor(AspectManager.java | :591) | at org.jboss.aop.AspectManager.getAdvisor(AspectManager.java:579) | at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.<clinit | >(ClientConnectionFactoryDelegate.java) | at sun.misc.Unsafe.ensureClassInitialized(Native Method) | at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAc | cessorFactory.java:25) | at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java | :122) | at java.lang.reflect.Field.acquireFieldAccessor(Field.java:918) | at java.lang.reflect.Field.getFieldAccessor(Field.java:899) | at java.lang.reflect.Field.getLong(Field.java:528) | at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1614 | ) | at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:52) | at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:425) | at java.security.AccessController.doPrivileged(Native Method) | at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:413) | at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:310) | at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:547) | at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:158 | 3) | at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496) | at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1 | 732) | at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) | at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:19 | 47) | at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) | | at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1 | 753) | at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) | at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) | at java.rmi.MarshalledObject.get(MarshalledObject.java:142) | at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:7 | 2) | at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:710) | at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:627) | at javax.naming.InitialContext.lookup(InitialContext.java:392) | at com.bcsis.his.mq.HISConsumer.<init>(HISConsumer.java:33) | at com.bcsis.his.socket.HISSender.init(HISSender.java:52) | at com.bcsis.his.socket.HISSender.<init>(HISSender.java:44) | at com.bcsis.his.socket.HISSdrManager.openConnection(HISSdrManager.java: | 88) | at HISLayout.createSTPConn(HISLayout.java:626) | at HISLayout$1.actionPerformed(HISLayout.java:528) | at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:19 | 95) | at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.jav | a:2318) | at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel | .java:387) | at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242 | ) | at javax.swing.AbstractButton.doClick(AbstractButton.java:357) | at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1 | 220) | at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMen | uItemUI.java:1261) | at java.awt.Component.processMouseEvent(Component.java:6041) | at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) | at java.awt.Component.processEvent(Component.java:5806) | at java.awt.Container.processEvent(Container.java:2058) | at java.awt.Component.dispatchEventImpl(Component.java:4413) | at java.awt.Container.dispatchEventImpl(Container.java:2116) | at java.awt.Component.dispatchEvent(Component.java:4243) | at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322 | ) | at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986) | | at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916) | at java.awt.Container.dispatchEventImpl(Container.java:2102) | at java.awt.Window.dispatchEventImpl(Window.java:2440) | at java.awt.Component.dispatchEvent(Component.java:4243) | at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) | at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre | ad.java:273) | at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread. | java:183) | at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre | ad.java:173) | at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168) | | at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160) | | at java.awt.EventDispatchThread.run(EventDispatchThread.java:121) | please give me suggestion is there additional package required are anything i have to change. Thanks in adv. Srinivas View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4193632#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...