c# exeption error on PrinterMonitorComponet.

Hi,
I'm using PrinterQueueWatch (open suorce library)
but at runtime it gives me an exception
not specified on creation of new object PrinterMonitorComponent.
(where there are >>>>>>>>>>>>>>>)
why?
see code attached

try
            {
                PrinterMonitorComponent Monitor = new PrinterMonitorComponent();
            Monitor.MonitorJobAddedEvent = false;
            Monitor.MonitorJobDeletedEvent = false;
            Monitor.MonitorJobSetEvent = true;
            Monitor.MonitorJobWrittenEvent = false;
            Monitor.MonitorPrinterChangeEvent = false; >>>>>>>>>>     Monitor.JobSet +=  new PrinterMonitorComponent.PrintJobEventHandler(SetPrintJob);
            Monitor.DeviceName = PrinterName;
        }
        catch (Exception ex) { Console.WriteLine(ex.Source.ToString()); };
            
            Prt_Proc.Start();
            
            //Prt_Proc.WaitForExit();
            int Timeout=180;
            do 
            {
                System.Threading.Thread.Sleep(1000);
                Timeout-=1;
            } while(Timeout > 0 && !Prt_Proc.HasExited);

            //Monitor.JobSet -= SetPrintJob;
                ////Prt_Proc.CloseMainWindow();
                                    
            return true;
        }

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