title: what causes this error NS_ERROR_DOCUMENT_NOT_CACHED
body: <p>I'm using URLLoader in flex, but as i load a certain url, the connection is aborted (monitored using HTTPFox plugin in firefox). I simulate same instance on another server but it does not abort. When I checked HTTPFox content it has the following value:</p>
  
  <p><strong>Error loading content (NS_ERROR_DOCUMENT_NOT_CACHED)</strong></p>
  
  <p>I've been searching the net but there seemed to be no explaination why NS_ERROR_DOCUMENT_NOT_CACHED occurs. I just  thought knowing why such error message appeared would solve why the connection is aborted.</p>
  
  <p>Here is a part of the code of the sample i made to test on both of the servers that worked and did not that does the URLLoader. </p>
  
  <pre><code>private var UrlLoaderService : URLLoader = new URLLoader();
  
  function initializeData():void
  {
       var parameters : URLVariables = new URLVariables();
       var requests : URLRequest = new URLRequest();
  
       parameters.param1="param1";
       parameters.param2="param2";
       parameters.param3="param3";
  
       requests.data = parameters;
       requests.method = URLRequestMethod.POST;
       requests.url = "/sampletest/testrequest.php?antiCache="+Math.random();
  
       UrlLoaderService.addEventListener(Event.COMPLETE, successResult);
       UrlLoaderService.load(requests);
  }
  </code></pre>