Ez-Sdk Windows / Simple Project Not Running

I'm trying to connect to EZ-B through code (Console Application) without success.

this is the code:

namespace EZConsoleApplication1
{
    using System;
    using EZ_B;
    internal class Program
    {
        private static EZB ezb;
        private static void Main(string[] args)
        {
            ezb = new EZB();
            Console.WriteLine("Connecting to EZ-B v4...");
            ezb.Connect("192.168.18.54");
            if (!ezb.IsConnected)
            {
                Console.WriteLine("Unable to connect to EZ-B v4");
                return;
            }
            ezb.Servo.SetServoFineTune(Servo.ServoPortEnum.D0, 90);
            Console.WriteLine("Done!");
            ezb.Disconnect();
        }
    }
}

first i tried the EZ Windows SDK, then i used the nuget package.

the program compiles, no errors, but when i run i get the following exception/error:

also i tried to run the exe file outside Visual studio and the exception is the same.

machine: Visual Studio 2013 Framework .net 4.5