[xfire-user] exception origin?

[JHunsaker]

I have the following client code:

                                Client client = new Client(new URL(
"http://btsdedsx02:9082/services/PrintService?WSDL";));
                                Object[] results = client.invoke(
"queueJob", new Object[] {reqCompany, reqSys, reqType, 
reqData.getBytes()});
                                retValue = results[0].toString();

which is generating the stack exception:
[ ERROR ] [04/23/07 15:21:56] [ obfuscate.JMFCallerServlet ] error 
handling the job request: : 
org.codehaus.xfire.fault.XFireFault: java.lang.Object
        at 
org.codehaus.xfire.fault.XFireFault.createFault(XFireFault.java:89)
        at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:79)
        at org.codehaus.xfire.client.Client.invoke(Client.java:335)
        at org.codehaus.xfire.client.Client.invoke(Client.java:349)
        at obfuscate.JMFCallerServlet.doPost(JMFCallerServlet.java:91)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
        at 
com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
        at 
com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
        at 
com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
        at 
com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
        at 
com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
        at 
com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
        at 
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:983)
        at 
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:564)
        at 
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:200)
        at 
com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:119)
        at 
com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:276)
        at 
com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
        at 
com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:182)
        at 
com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
        at 
com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
        at 
com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:618)
        at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:439)
        at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:672)
Caused by: java.lang.ClassCastException: java.lang.Object
        at 
org.codehaus.xfire.aegis.type.mtom.DataHandlerType.createAttachment(DataHandlerType.java:18)
        at 
org.codehaus.xfire.aegis.type.mtom.AbstractXOPType.writeObject(AbstractXOPType.java:89)
        at 
org.codehaus.xfire.aegis.AegisBindingProvider.writeParameter(AegisBindingProvider.java:222)
        at 
org.codehaus.xfire.service.binding.AbstractBinding.writeParameter(AbstractBinding.java:273)
        at 
org.codehaus.xfire.service.binding.WrappedBinding.writeMessage(WrappedBinding.java:89)
        at 
org.codehaus.xfire.soap.SoapSerializer.writeMessage(SoapSerializer.java:80)
        at 
org.codehaus.xfire.transport.http.HttpChannel.writeWithoutAttachments(HttpChannel.java:56)
        at 
org.codehaus.xfire.transport.http.CommonsHttpMessageSender.getByteArrayRequestEntity(CommonsHttpMessageSender.java:417)
        at 
org.codehaus.xfire.transport.http.CommonsHttpMessageSender.send(CommonsHttpMessageSender.java:355)
        at 
org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:123)
        at 
org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)
        at 
org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
        at 
org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
        at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:75)
        ... 24 more

The server code interface is:

        public long queueJob(
                String company,
                String application,
                String document,
                byte[] xml);

Any ideas? Thanks!