Problem connecting SOAP-Connector

I got a problem connecting SOAP-Connector. My goal is to use the connector for showing runtime-information in Adobe Flex.

I'm using MX4J inside SAP WebAS Server. I deployed Axis and see that the ConnectorServer is running. If I connect to the Server by a Javaclient I get this Exception: 

Exception in thread "main" AxisFault
 faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
 faultSubcode: 
 faultString: java.lang.NullPointerException
 faultActor: 
 faultNode: 
 faultDetail: 
	{http://xml.apache.org/axis/}stackTrace: java.lang.NullPointerException
	at java.util.Hashtable.put(Unknown Source)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.setProperty(Unknown Source)
	at org.apache.axis.encoding.DeserializationContextImpl.parse(DeserializationContextImpl.java:246)
	at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:538)
	at org.apache.axis.Message.getSOAPEnvelope(Message.java:376)
	at org.apache.axis.client.Call.invokeEngine(Call.java:2583)
	at org.apache.axis.client.Call.invoke(Call.java:2553)
	at org.apache.axis.client.Call.invoke(Call.java:2248)
	at org.apache.axis.client.Call.invoke(Call.java:2171)
	at org.apache.axis.client.Call.invoke(Call.java:1691)
	at mx4j.tools.remote.soap.SOAPClientInvoker.connect(SOAPClientInvoker.java:67)
	at mx4j.tools.remote.http.HTTPConnector.doConnect(HTTPConnector.java:51)
	at mx4j.tools.remote.AbstractJMXConnector.connect(AbstractJMXConnector.java:70)
	at javax.management.remote.JMXConnectorFactory.connect(Unknown Source)
	at javax.management.remote.JMXConnectorFactory.connect(Unknown Source)
	at com.sap.promise.test.Client.main(Client.java:35)

If I connect by the Eclipse Webservice Explorer I get this:

- <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
- <soapenv:Body>
- <soapenv:Fault>
  <faultcode>soapenv:Server.generalException</faultcode> 
  <faultstring>Could not find mandatory header connectionId</faultstring> 
- <detail>
  <ns1:hostname xmlns:ns1="http://xml.apache.org/axis/">DRSD00146892A</ns1:hostname> 
  </detail>
  </soapenv:Fault>
  </soapenv:Body>
  </soapenv:Envelope>

It woul be nice if someone could help me, I'm trying to solve the problem since one week.

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