System.NullReferenceException: Object not set to an instance of an object. At L2HelperClient.packetCapture.createListenerThreads() in ...packetCapture.cs:line 46

Line 46:
                ThreadStart ts = new ThreadStart(packetCapture.beginThread);
                Console.WriteLine("Thread start created...");
                try
                {
                    listenerThreads[i] = new Thread(ts); // line 46
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                }