void Tick ()
		{

try {
			try {
				if (pipeline != null && pipeline.MoveNext ()){
					if (pipeline == null || (bool)pipeline.Current)
						PipelineDone ();
				}
			} catch (ThreadAbortException taex) {
				object obj = taex.ExceptionState;
				Thread.ResetAbort ();
				stop_processing = true;
				if (obj is StepTimeout)
					ProcessError (new HttpException ("The request timed out."));
				else
					PipelineDone ();
			} catch (Exception e) {
				Console.WriteLine ("Tick caught an exception that has not been propagated:\n" + e);
			}
} catch (Exception outer)
Console.WriteLine ("Tick caught another exception:\n" + e);

}
		}