title: JSONP - Callback was not called
body: <p>I created a jsonp ajax call for getting data via cross domain.
  The thing right now is - I successfully manipulated it to send data over a webserver.</p>
  
  <p>But it fails receiving data in a get call. When I have look in the debugger I see that the network tab receives the file and within there is the data. But I still get an error message.</p>
  
  <p>The url gets a parameter with the jquery callback key. My webservices uses that key and adds it again in the response header. (which I also see in the debugger). I also receive a <code>OK</code> <code>200</code> status code in the network tab that the data is received...</p>
  
  <p>The question now is why the ajax call doesn't jump into the success function but shows me everytime the error that the callback isn't called.</p>
  
  <p>What do I do wrong?</p>
  
  <p>The code looks like this:</p>
  
  <pre><code>    $.ajax({
          url: getServicePath,
          dataType: 'jsonp',  
          username: "abc",
          password: "123",
          contentType: "application/json",
          success: function(results) {
                   alert(results);
          },
          error: function(XMLHttpRequest, textStatus, errorThrown) { 
                   alert("Status: " + textStatus); alert("Error: " + errorThrown); 
          }   
  </code></pre>
  
  <p>Thanks for your help!! :)</p>