Petals SE Flowable

org.apache.cxf.binding.soap.SoapFault: "http://.....", the namespace on the "xxxxx" element, is not a valid SOAP version.
	at org.apache.cxf.binding.soap.interceptor.ReadHeadersInterceptor.readVersion(ReadHeadersInterceptor.java:128)
	at org.apache.cxf.binding.soap.interceptor.ReadHeadersInterceptor.handleMessage(ReadHeadersInterceptor.java:172)
	at org.apache.cxf.binding.soap.interceptor.ReadHeadersInterceptor.handleMessage(ReadHeadersInterceptor.java:69)
	at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
	at org.apache.cxf.endpoint.ClientImpl.onMessage(ClientImpl.java:798)
	at org.ow2.petals.flowable.outgoing.cxf.transport.PetalsConduit.onMessage(PetalsConduit.java:205)
	at org.ow2.petals.flowable.incoming.FlowableJBIListener.onAsyncJBIMessage(FlowableJBIListener.java:172)
	at org.ow2.petals.component.framework.process.MessageExchangeProcessor.invokeJBIListener(MessageExchangeProcessor.java:524)
	at org.ow2.petals.component.framework.process.MessageExchangeProcessor.processAsConsumer(MessageExchangeProcessor.java:425)
	at org.ow2.petals.component.framework.process.MessageExchangeProcessor.process(MessageExchangeProcessor.java:282)
	at org.ow2.petals.component.framework.process.MessageExchangeProcessor.run(MessageExchangeProcessor.java:182)
	at org.ow2.petals.component.framework.process.JBIProcessorThreadPoolExecutor$ExchangeRunnable.run(JBIProcessorThreadPoolExecutor.java:90)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
	at org.ow2.petals.component.framework.process.JBIProcessorThreadFactory$JBIProcessorThread.run(JBIProcessorThreadFactory.java:99)