UnsupportedOperationException when using Java 6

2007-05-05 00:52:57,542 ERROR [org.jboss.ws.jaxrpc.CallImpl] Call invocation failed with unkown Exception
java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage
at javax.xml.soap.SOAPMessage.setProperty(SOAPMessage.java:424)
at org.jboss.ws.soap.SOAPMessageImpl.<init>(SOAPMessageImpl.java:65)
at org.jboss.ws.soap.MessageFactoryImpl.createMessage(MessageFactoryImpl.java:115)
at org.jboss.ws.binding.soap.SOAP11BindingProvider.createMessage(SOAP11BindingProvider.java:59)
at org.jboss.ws.binding.soap.SOAPBindingProvider.bindRequestMessage(SOAPBindingProvider.java:89)
at org.jboss.ws.binding.soap.SOAP11BindingProvider.bindRequestMessage(SOAP11BindingProvider.java:65)
at org.jboss.ws.jaxrpc.CallImpl.invokeInternal(CallImpl.java:645)
at org.jboss.ws.jaxrpc.CallImpl.invoke(CallImpl.java:404)
at org.jboss.ws.jaxrpc.CallProxy.invoke(CallProxy.java:148)