NullPointerException re-serialising message which includes an xmlns=""
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                 Key: WSCOMMONS-62
                 URL: http://issues.apache.org/jira/browse/WSCOMMONS-62
             Project: WS-Commons
          Issue Type: Bug
          Components: AXIOM
         Environment: WinXPSP2, Axiom SVN and associated maven deps
            Reporter: David Illsley


I have an Axis2 service which I'm using for some interop testsing which has to 
serialise received messages to logs which fails with a NullPointerException.

I have produced a simplified testcase which I will attach momentarily.

The exception seen is:
Exception in thread "main" java.lang.NullPointerException
        at 
com.ctc.wstx.sw.SimpleOutputElement.getPrefix(SimpleOutputElement.java:449)
        at 
com.ctc.wstx.sw.BaseNsStreamWriter.getPrefix(BaseNsStreamWriter.java:112)
        at 
org.apache.axiom.om.impl.MTOMXMLStreamWriter.getPrefix(MTOMXMLStreamWriter.java:203)
        at 
org.apache.axiom.om.impl.MTOMXMLStreamWriter.getPrefix(MTOMXMLStreamWriter.java:203)
        at 
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeNamespace(OMSerializerUtil.java:96)
        at 
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeNamespaces(OMSerializerUtil.java:264)
        at 
org.apache.axiom.soap.impl.llom.soap11.SOAP11FaultCodeImpl.internalSerialize(SOAP11FaultCodeImpl.java:105)
        at 
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:756)
        at 
org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:310)
        at 
org.apache.axiom.soap.impl.llom.SOAPFaultImpl.internalSerialize(SOAPFaultImpl.java:214)
        at 
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:756)
        at 
org.apache.axiom.soap.impl.llom.soap11.SOAP11FaultImpl.internalSerialize(SOAP11FaultImpl.java:74)
        at 
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:771)
        at 
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:756)
        at 
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:771)
        at 
org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:177)
        at 
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:756)
        at 
org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:310)
        at 
org.apache.axiom.om.impl.llom.OMNodeImpl.serialize(OMNodeImpl.java:348)
        at 
org.apache.axiom.om.impl.llom.OMElementImpl.toString(OMElementImpl.java:899)
        at java.lang.String.valueOf(String.java:1429)
        at 
com.ibm.jvm.io.ConsolePrintStream.getNewlinedString(ConsolePrintStream.java:337)
        at 
com.ibm.jvm.io.ConsolePrintStream.getNewlinedString(ConsolePrintStream.java:321)
        at 
com.ibm.jvm.io.ConsolePrintStream.println(ConsolePrintStream.java:311)
        at AxiomTest.main(AxiomTest.java:15)

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