Problems with Soap1.2

Hello @all
i' m new with spring-ws, and wrote my first service..
with soap1.1 it works fine but i can't get correct responses when i send soap1.2 messages with SoapUI..

The exception I get:

Code:

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org.springframework.ws.soap.SoapMessageCreationException: Could not create message from InputStream: Unable to internalize message; nested exception is com.sun.xml.messaging.saaj.SOAPExceptionImpl: Unable to internalize message
        org.springframework.ws.soap.saaj.SaajSoapMessageFactory.createWebServiceMessage(SaajSoapMessageFactory.java:180)

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Does anybody know what I have to do?

I am using the PayloadRootQNameEndpointMapping for the payload-mapping and the AbstractMarshallingPayloadEndpoint for the endpoint..
Running Env: JBoss 4.0.5.GA

has somebody a complete sample (client and service) that runs with soap1.2 messages ?

Thanks and reg. from vienna

Did you specify to use SOAP 1.2 on the server-side message factory?

hmm no i did not.. :(
can you show me an example hot to do that please?
thanks