soap-attachment fails with error:javax.mail.internet.InternetHeaders cannot be cast to java.util.Map

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
    <soap:Body>
        <soap:Fault>
            <soap:Code>
                <soap:Value>soap:Receiver</soap:Value>
            </soap:Code>
            <soap:Reason>
                <soap:Text xml:lang="en">javax.mail.internet.InternetHeaders cannot be cast to java.util.Map</soap:Text>
            </soap:Reason>
        </soap:Fault>
    </soap:Body>
</soap:Envelope>

[WARNING] 
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.NoSuchElementException
	at java.util.Collections$EmptyIterator.next(Collections.java:3006)
	at org.switchyard.quickstarts.soap.attachment.SoapAttachmentClient.main(SoapAttachmentClient.java:49)
	... 6 more