SoapClient Fault in Zend

Question

I'm trying to debug this funky soapClient fault:

looks like we got no XML document

This is my request:

$client = new Zend_Soap_Client('wsdlUrl', array('trace' => 1, 'exceptions' => 0));    

echo $client->incomingRequest('user','pass','stuff');

var_dump($client->getLastResponse());

But I can't view the response to know why it's faulting BECAUSE of the fault which stops the getLastResponse() from working.

So how do I tweak this so I can view the actual response from the server?