title: No conversion from text to string - ajax call fails
body: <p>I upgraded my page from using jquery 1.4.4 to jquery 1.9.1 and suddenly my ajax calls stopped working. If i revert to jquery 1.4.4 it works again. I am getting below error. </p>
  
  <blockquote>
    <p>No conversion from text to string</p>
  </blockquote>
  
  <p>Below is my code</p>
  
  <pre><code> $.ajax({ url: "/Reporting/RunQuery",
            type: "Post",
            data: { prm_Query: qrytxt }, dataType: "string",
            error: function (XMLHttpRequest, status, error) {
                  debugger;
                  alert("The following error occured while adding data: " + error);
             },
             success: function (data) {
                 debugger;
                 $('#divQuerytextarea').html('').append(data);
              }
             });
  </code></pre>
  
  <p>My call to /Reporting/RunQuery succeeds and it has valid return string in the RunQuery method. Then it falls into error: of ajax call with 'No conversion from text to string' error.</p>
  
  <p>Not finding much in google for this. Any help is appreciated.</p>