Hi, I followed the docs for installing JBMessaging 1.2.0 on JBAS 4.2.0CR1. However I get the following exception while running the validation test (examples/queue): Queue /queue/testQueue exists | 16:28:51,667 ERROR @main [SocketClientInvoker] Got marshalling exception, exiting | java.io.EOFException | at java.io.DataInputStream.readInt(DataInputStream.java:375) | at org.jboss.jms.server.remoting.JMSWireFormat.read(JMSWireFormat.java:297) | at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.versionedRead(MicroSocketClientInvoker.java:936) | at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:579) | at org.jboss.remoting.transport.bisocket.BisocketClientInvoker.transport(BisocketClientInvoker.java:269) | at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122) | at org.jboss.remoting.LeasePinger.sendClientPing(LeasePinger.java:283) | at org.jboss.remoting.LeasePinger.addClient(LeasePinger.java:117) | at org.jboss.remoting.MicroRemoteClientInvoker.establishLease(MicroRemoteClientInvoker.java:398) | at org.jboss.remoting.Client.setupClientLease(Client.java:1504) | at org.jboss.remoting.Client.connect(Client.java:1404) | at org.jboss.remoting.Client.connect(Client.java:441) | at org.jboss.jms.client.remoting.JMSRemotingConnection.start(JMSRemotingConnection.java:271) | at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.org$jboss$jms$client$delegate$ClientConnectionFactoryDelegate$createConnectionDelegate$aop(ClientConnectionFactoryDelegate.java:146) | at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.java) | at org.jboss.jms.client.container.StateCreationAspect.handleCreateConnectionDelegate(StateCreationAspect.java:83) | at org.jboss.aop.advice.org.jboss.jms.client.container.StateCreationAspect0.invoke(StateCreationAspect0.java) | at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.java) | at org.jboss.jms.client.container.ExceptionInterceptor.invoke(ExceptionInterceptor.java:71) | at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.java) | at org.jboss.jms.client.container.ClientLogInterceptor.invoke(ClientLogInterceptor.java:107) | at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_4579211046834694258.java) | at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.createConnectionDelegate(ClientConnectionFactoryDelegate.java) | at org.jboss.jms.client.JBossConnectionFactory.createConnectionInternal(JBossConnectionFactory.java:212) | at org.jboss.jms.client.JBossConnectionFactory.createConnection(JBossConnectionFactory.java:88) | at org.jboss.jms.client.JBossConnectionFactory.createConnection(JBossConnectionFactory.java:83) | at org.jboss.example.jms.queue.QueueExample.example(QueueExample.java:72) | at org.jboss.example.jms.common.ExampleSupport.run(ExampleSupport.java:137) | at org.jboss.example.jms.queue.QueueExample.main(QueueExample.java:133) | 16:28:51,667 WARN @main [LeasePinger] LeasePinger[SocketClientInvoker[1afae45, bisocket://127.0.0.1:4457](5c4o01x-cu35mx-ez1cunns-1-ez1cuo3n-5)] failed to ping to server: Failed to communicate. Problem during marshalling/unmarshalling; nested exception is: | java.io.EOFException | The message was successfully sent to the testQueue queue | Received message: Hello! | The example connected to JBoss Messaging version 1.2.0.GA (1.2) | | ##################### | ### SUCCESS! ### | ##################### Any ideas? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4026284#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...