I've updated the aop jar to the recommended version and now get this error Caused by: java.lang.AbstractMethodError: getLoaderRepository at org.jboss.aop.AspectManager.instance(AspectManager.java:340) at org.jboss.aop.AspectManager.instance(AspectManager.java:255) at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.(ClientConnectionFactoryDelegate.java) at sun.misc.Unsafe.ensureClassInitialized(Native Method) at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.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.io.ObjectStreamClass.(ObjectStreamClass.java:413) at java.io.ObjectStreamClass.lookup0(ObjectStreamClass.java:310) at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java) at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:547) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) 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:72) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:652) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587) at javax.naming.InitialContext.lookup(InitialContext.java:392) It looks as thought the implementation of AOPScopedClassLoaderHelper that is used within AspectManager does not implement this method. The only implementation in my classpath is JBossScopedClassLoaderHelper, and the class signature doesn't have this method. The class is defined in jboss-aspect-library-jdk50.jar, version jboss-aspect-library-1.5. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4216800#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...