Hi All, I'm currently making some tests with -) jbossws.1.2.1.GA, -) Java5, Jboss-4.0.5-GA (EJB3 cluster) using a stateless ejb3 (deployed on Jboss-AS) as Webservice client towards a remote Webservice server based on a Sun SOA platform. An external standalone-client call an EJB service, using the remote interface of the EJB, and: -) If the remote webservice is up I have no problem -) If the webservice is down than I have the exception below. Of course an exception is expexted but here it seems that the AS is not able to recontruct the org.jboss.ws.WSException class. Such a class is defined into the jbossws-client.jar and I did some tests putting such jar into the EJB jar or into the EAR, but nothing changed... Does anybody have an explanation for this ? Could be a class loader problem, I mean jbossws use a class loader that is different from the one used to load the EJB stuff and the serialized class could not be recontructed into the EJB scope since it has been serialized bu jbossws stuff ? Thankx, Marco Buildfile: D:\develop\wfm\test\fwfaxprx\build.xml prepare: tstcompile: [javac] Compiling 1 source file to D:\develop\wfm\test\fwfaxprx\build\classes run.client: [java] The connected device Kind is : FaxServer [java] Getting a random fax status [java] Exception in thread "main" java.lang.reflect.UndeclaredThrowableException [java] at $Proxy0.getItemSts(Unknown Source) [java] at com.siemens.fw.test.FwFaxPrxTest.main(FwFaxPrxTest.java:30) [java] Caused by: java.lang.ClassNotFoundException: org.jboss.ws.WSException [java] at java.net.URLClassLoader$1.run(Unknown Source) [java] at java.security.AccessController.doPrivileged(Native Method) [java] at java.net.URLClassLoader.findClass(Unknown Source) [java] at java.lang.ClassLoader.loadClass(Unknown Source) [java] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) [java] at java.lang.ClassLoader.loadClass(Unknown Source) [java] at org.jboss.remoting.loading.RemotingClassLoader.loadClass(RemotingClassLoader.java:50) [java] at org.jboss.remoting.loading.ObjectInputStreamWithClassLoader.resolveClass(ObjectInputStreamWithClassLoader.java:139) [java] at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) [java] at java.io.ObjectInputStream.readClassDesc(Unknown Source) [java] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) [java] at java.io.ObjectInputStream.readObject0(Unknown Source) [java] at java.io.ObjectInputStream.defaultReadFields(Unknown Source) [java] at java.io.ObjectInputStream.readSerialData(Unknown Source) [java] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) [java] at java.io.ObjectInputStream.readObject0(Unknown Source) [java] at java.io.ObjectInputStream.defaultReadFields(Unknown Source) [java] at java.io.ObjectInputStream.readSerialData(Unknown Source) [java] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) [java] at java.io.ObjectInputStream.readObject0(Unknown Source) [java] at java.io.ObjectInputStream.defaultReadFields(Unknown Source) [java] at java.io.ObjectInputStream.readSerialData(Unknown Source) [java] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) [java] at java.io.ObjectInputStream.readObject0(Unknown Source) [java] at java.io.ObjectInputStream.defaultReadFields(Unknown Source) [java] at java.io.ObjectInputStream.readSerialData(Unknown Source) [java] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) [java] at java.io.ObjectInputStream.readObject0(Unknown Source) [java] at java.io.ObjectInputStream.defaultReadFields(Unknown Source) [java] at java.io.ObjectInputStream.readSerialData(Unknown Source) [java] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) [java] at java.io.ObjectInputStream.readObject0(Unknown Source) [java] at java.io.ObjectInputStream.readObject(Unknown Source) [java] at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:128) [java] at org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:66) [java] at org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:279) [java] at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:143) [java] at org.jboss.remoting.Client.invoke(Client.java:525) [java] at org.jboss.remoting.Client.invoke(Client.java:488) [java] at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:55) [java] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) [java] at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61) [java] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) [java] at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53) [java] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) [java] at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:77) [java] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) [java] at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:102) [java] ... 2 more [java] Java Result: 1 BUILD SUCCESSFUL Total time: 3 seconds View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4046234#... 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