esapi script not working after Eclipse upgrade

[Luliny]

Dear Experts,

Our site recently upgraded from Eclipse 13.7 to 15.6. We have an esapi standalone script that does not work any more. I have updated the DLL files with the ones coming with the new Eclipse. To test it, I compiled and run the standalone script template generated by the Script Wizard in VS2017, it gives an error of:

Exception thrown: 'System.IO.FileNotFoundException' in esapi15_standalone_template.exe
The program '[13608] esapi15_standalone_template.exe' has exited with code 0 (0x0).

The code is shown below. Could you give me some idea how to fix it? Thanks! --Lulin

using System;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Reflection;
using VMS.TPS.Common.Model.API;
using VMS.TPS.Common.Model.Types;

// TODO: Replace the following version attributes by creating AssemblyInfo.cs. You can do this in the properties of the Visual Studio project.
//[assembly: AssemblyVersion("1.0.0.1")]
//[assembly: AssemblyFileVersion("1.0.0.1")]
//[assembly: AssemblyInformationalVersion("1.0")]

// TODO: Uncomment the following line if the script requires write access.
// [assembly: ESAPIScript(IsWriteable = true)]

namespace esapi15_standalone_template
{
class Program
{
[STAThread]
static void Main(string[] args)
{
try
{
using (Application app = Application.CreateApplication())
{
Execute(app);
}
}
catch (Exception e)
{
Console.Error.WriteLine(e.ToString());
}
}
static void Execute(Application app)
{
// TODO: Add your code here.
Console.WriteLine("This data mining application queries the treatment history for each patient in the Aria database and writes");
}
}
}