How to handle ws-addressing in mock asynchronous service

I am trying to mock an asynchronous service. I have referred http://stackoverflow.com/questions/7901685/soapui-mocking-asynchronous-services and http://www.eviware.com/forum/viewtopic.php?f=5&t=3542&p=12474&hilit=mock+asynchronous#p12474 for the same. However the callback request is not received by the service client as it is not being sent to required address specified in WS-Addressing properties.

Enabling the WS-Addressing on the mock service and mock request results in soapui error.

Mon May 28 12:20:45 IST 2012:ERROR:org.apache.xmlbeans.XmlException: error: Unexpected end of file after null
   org.apache.xmlbeans.XmlException: error: Unexpected end of file after null
    at org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3486)
    at org.apache.xmlbeans.impl.store.Locale.parse(Locale.java:712)
    at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:696)
    at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:683)
    at org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:208)
    at org.apache.xmlbeans.XmlObject$Factory.parse(XmlObject.java:580)
    at com.eviware.soapui.support.xml.XmlUtils.createXmlObject(XmlUtils.java:263)
    at com.eviware.soapui.impl.wsdl.support.wsa.WsaUtils.<init>(WsaUtils.java:107)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockResponse.execute(WsdlMockResponse.java:287)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockOperation.dispatchRequest(WsdlMockOperation.java:259)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchPostRequest(WsdlMockRunner.java:290)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchRequest(WsdlMockRunner.java:375)
    at com.eviware.soapui.monitor.JettyMockEngine$ServerHandler.handle(JettyMockEngine.java:715)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
   Caused by: org.xml.sax.SAXParseException: Unexpected end of file after null
    at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.reportFatalError(Piccolo.java:1038)
    at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.parse(Piccolo.java:723)
    at org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3454)
    ... 24 more
Mon May 28 12:20:45 IST 2012:ERROR:java.lang.NullPointerException
   java.lang.NullPointerException
    at com.eviware.soapui.impl.wsdl.support.soap.SoapUtils.getHeaderElement(SoapUtils.java:146)
    at com.eviware.soapui.impl.wsdl.support.wsa.WsaUtils.getHeader(WsaUtils.java:138)
    at com.eviware.soapui.impl.wsdl.support.wsa.WsaUtils.createWSAddressingMockResponse(WsaUtils.java:488)
    at com.eviware.soapui.impl.wsdl.support.wsa.WsaUtils.addWSAddressingMockResponse(WsaUtils.java:480)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockResponse.execute(WsdlMockResponse.java:287)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockOperation.dispatchRequest(WsdlMockOperation.java:259)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchPostRequest(WsdlMockRunner.java:290)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchRequest(WsdlMockRunner.java:375)
    at com.eviware.soapui.monitor.JettyMockEngine$ServerHandler.handle(JettyMockEngine.java:715)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Mon May 28 12:20:45 IST 2012:ERROR:com.eviware.soapui.impl.wsdl.mock.DispatchException: java.lang.NullPointerException
   com.eviware.soapui.impl.wsdl.mock.DispatchException: java.lang.NullPointerException
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockResponse.execute(WsdlMockResponse.java:323)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockOperation.dispatchRequest(WsdlMockOperation.java:259)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchPostRequest(WsdlMockRunner.java:290)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockRunner.dispatchRequest(WsdlMockRunner.java:375)
    at com.eviware.soapui.monitor.JettyMockEngine$ServerHandler.handle(JettyMockEngine.java:715)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
   Caused by: java.lang.NullPointerException
    at com.eviware.soapui.impl.wsdl.support.soap.SoapUtils.getHeaderElement(SoapUtils.java:146)
    at com.eviware.soapui.impl.wsdl.support.wsa.WsaUtils.getHeader(WsaUtils.java:138)
    at com.eviware.soapui.impl.wsdl.support.wsa.WsaUtils.createWSAddressingMockResponse(WsaUtils.java:488)
    at com.eviware.soapui.impl.wsdl.support.wsa.WsaUtils.addWSAddressingMockResponse(WsaUtils.java:480)
    at com.eviware.soapui.impl.wsdl.mock.WsdlMockResponse.execute(WsdlMockResponse.java:287)
    ... 16 more

Please suggest how can I resole these issues :
How to get the addressing information from soap request and use it in dummy callback request ?
How to set the endpoint address for the callback request in the test case ?

Thanks in advance