C-Sharp - vshost32.exe funkioniert nicht mehr

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using System.Runtime.InteropServices;

namespace VellemanK8055
{
    class Program
    {
        [DllImport("K8055D.DLL")]  
        public static extern int OpenDevice(int addr);
        [DllImport("K8055D.DLL")]  
        public static extern void CloseDevice();
        [DllImport("K8055D.DLL")]  
        public static extern void ClearAllDigital();
        [DllImport("K8055D.DLL")]  
        public static extern void SetAllDigital();

        static void Main(string args)
        {
            K8055.OpenDevice(0);

            Program.SetAllDigital();
            System.Threading.Thread.Sleep(1000);
            Program.ClearAllDigital();

            Program.CloseDevice();

            Console.WriteLine("Fertig, Enter drücken...");  
            Console.ReadLine();
        }
    }
}

vshost32.exe funktioniert nicht mehr