title: init() failing with OAuthException
body: <p>I am trying to use the FacebookMobile Graph API for actionscript 3.  When I run
      FacebookMobile.init(MY_AP_ID, facebookInitHandler);</p>
  
  <p>My callback is getting null for the success object and false is an Error saying "OAuthException" "An active access token must be used to query information about the current user."</p>
  
  <p>I am getting this error on both IOS and Android.  Is it possible I set something up wrong on the facebook site?</p>
  
  <p>This is being thrown in init() so I am not trying to query anything about any user yet.  I have spent hours with this with no luck. Any help would be greatly appreciated.</p>
  
  <pre><code>if(FacebookMobile.getSession() == null){
                  FacebookMobile.init(MY_AP_ID, facebookInitHandler);
              }
  
   //sets facebook session
          private function facebookInitHandler(success:Object, fail:Object):void{
              if(success != null){
                  trace("facebook init success");
                  //publish_stream is required to post messages to the wall 
                  FacebookMobile.login(facebookLoginHandler, stage, ["publish_stream"]);
              }else{
                  trace("Facebook initialization falied- " + String(fail.error.message));
                  displayGeneralAlert("An error occurred", "Unable to initialize Facebook component");
              }
          }
  </code></pre>