问为什么我不能在一台机器上启动超过X个用.Net开发的windows服务

EN

SC create "Test Service Copy 01" start= demand binpath= "C:\Temp\TestService\TestService01.exe" obj= "mydomain\myservices" password= "myservicepwd" displayname= "Test Service Copy 01"

TestService18.exe - Application Error 
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The exception unknown software exception (0xc06d007e) occurred in the application at location 0x7c812afb. 


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OK   Cancel    
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using System;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.ServiceProcess;
using System.Threading;

namespace TestService
{
    public class MyService : ServiceBase
    {
        private Timer stateTimer;
        private readonly TimerCallback timerDelegate = WriteToLog;
        static readonly string fileName = @"C:\temp\Testservice\Log\" + new Random().Next() + ".txt";
        public MyService()
        {
            ServiceName = "Test Service";
            CanStop = true;
            CanPauseAndContinue = false;
            AutoLog = true;
        }

        protected override void OnStart(string[] args)
        {
            using (StreamWriter writer = new StreamWriter(fileName, true))
            {
                writer.WriteLine("Starting ...");
                writer.WriteLine(Assembly.GetExecutingAssembly().Location);
            }
            stateTimer = new Timer(timerDelegate, null, 1000, 1000);
        }

        protected override void OnStop()
        {
            stateTimer.Dispose();
        }

        static void WriteToLog(object stateObject)
        {
            using (StreamWriter writer = new StreamWriter(fileName, true))
            {
                writer.WriteLine(DateTime.Now.Ticks);
            }
        }

        public static void Main()
        {
            Run(new MyService());
        }
    }
}