分析SSIS包

我在文件系统的文件夹中有几个.DTSX包。
我尝试使用下一个脚本从包中提取其他信息:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using Microsoft.SqlServer.Server;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts;

namespace ImportDataFromPackage
{
    class Program
    {
        static void Main(string[] args)
        {
            //  The pkg variable points to a package
            //  installed with the SSIS samples.
            string pkg = @"D:\MyFolder\Ryder_project\testpackage\ACS\ACS_Available_Months.dtsx";

            Application app = new Application();
            Package p1 = app.LoadPackage(pkg, null);
            p1.Description = "CalculatedColumns package";

            app.SaveToDtsServer(p1, null, @"File System\myp1Package", "YOURSERVER");
            PackageInfos pInfos = app.GetDtsServerPackageInfos(@"File System", "YOURSERVER");
            foreach (PackageInfo pinfo in pInfos)
            {
                Console.WriteLine("Package Information");
                Console.WriteLine("CreationDate:        {0}", pinfo.CreationDate);
                Console.WriteLine("Description:         {0}", pinfo.Description);
                Console.WriteLine("Flags:               {0}", pinfo.Flags);
                Console.WriteLine("Folder:              {0}", pinfo.Folder);
                Console.WriteLine("Name:                {0}", pinfo.Name);
                Console.WriteLine("PackageDataSize:     {0}", pinfo.PackageDataSize);
                Console.WriteLine("PackageGuid:         {0}", pinfo.PackageGuid);
                Console.WriteLine("VersionBuild:        {0}", pinfo.VersionBuild);
                Console.WriteLine("VersionComments      {0}", pinfo.VersionComments);
                Console.WriteLine("VersionGUID          {0}", pinfo.VersionGUID);
                Console.WriteLine("VersionMajor         {0}", pinfo.VersionMajor);
                Console.WriteLine("VersionMinor         {0}", pinfo.VersionMinor);
                Console.WriteLine();
            }
        }
    }


}

我得到下一个错误:

请帮我解决这个问题。