title: Consuming Webservice fails with 'SRT: Unsupported xstream found: ("HTTP Code 200 : OK")'
body: <p>i'm trying to consume a SAP WebService using Zend_Soap_Client
  and getting the error "SRT: Unsupported xstream found: ("HTTP Code 200  : OK")"</p>
  
  <p>Does this mean the call of the WebService method works,
  but I (respectively Zend/PHP) can't handle the response?</p>
  
  <p>Do you have any ideas how to fix this problem?</p>