         self.sessionManager = sessionManager
         self.me = me
         
-        self.operationQueue = NSOperationQueue()
+        self.operationQueue = OperationQueue()
         self.operationQueue.maxConcurrentOperationCount = 1
     }
 

                        return
                    }
                    
                    if operation.cancelled == true
                    {
                        return
                    }

                    return
                }
                
                if operation.isCancelled == true
                {
                    return
                }
