diff --git a/Mk0.Software.ImageSorter/Main.Designer.cs b/Mk0.Software.ImageSorter/Main.Designer.cs
index 29c210d..8a15e1a 100644
--- a/Mk0.Software.ImageSorter/Main.Designer.cs
+++ b/Mk0.Software.ImageSorter/Main.Designer.cs
@@ -472,8 +472,9 @@
             this.MinimumSize = new System.Drawing.Size(983, 605);
             this.Name = "Main";
             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
-            this.Text = "Image Sorter v1.27 | © 2015-2019 by manuelkamper.com";
+            this.Text = "Image Sorter v1.28 | © 2015-2019 by manuelkamper.com";
             this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Main_FormClosing);
+            this.Load += new System.EventHandler(this.Main_Load);
             this.Shown += new System.EventHandler(this.Main_Shown);
             this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Main_KeyDown);
             this.Resize += new System.EventHandler(this.Main_ResizeEnd);
diff --git a/Mk0.Software.ImageSorter/Main.cs b/Mk0.Software.ImageSorter/Main.cs
index da8e2eb..f67bd15 100644
--- a/Mk0.Software.ImageSorter/Main.cs
+++ b/Mk0.Software.ImageSorter/Main.cs
@@ -6,7 +6,6 @@ using Mk0.Tools.Randomization;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
-using System.Data;
 using System.Diagnostics;
 using System.Drawing;
 using System.Drawing.Imaging;
@@ -41,21 +40,48 @@ namespace Mk0.Software.ImageSorter
         private string zoomType = "auto";
         private string startuppath;
         private string startupimage;
+        public string[] Args;
 
-        public Main(string startuppath)
+        public Main()
         {
             InitializeComponent();
             banner = new Banner(components, panel3, pictureBox1, pictureBox2, label1, label2);
             pictureBox.Cursor = grabCursor;
             DoubleBuffered = true;
-            if (!string.IsNullOrEmpty(startuppath) && File.Exists(startuppath))
-            {
-                this.startuppath = Path.GetDirectoryName(startuppath);
-                startupimage = Path.GetFileName(startuppath);
-            }
             SetDefaultPath();
         }
 
+        private void Main_Load(object sender, EventArgs e)
+        {
+            if (Args != null)
+            {
+                ProcessParameters(null, Args);
+                Args = null;
+            }
+        }
+
+        public delegate void ProcessParametersDelegate(object sender, string[] args);
+        public void ProcessParameters(object sender, string[] args)
+        {
+            if (args != null && args.Length != 0)
+            {
+                if (!string.IsNullOrEmpty(args[0]) && File.Exists(args[0]))
+                {
+                    startuppath = Path.GetDirectoryName(args[0]);
+                    startupimage = Path.GetFileName(args[0]);
+                    if (!string.IsNullOrEmpty(startuppath) && File.Exists(startuppath))
+                    {
+                        startuppath = Path.GetDirectoryName(startuppath);
+                        startupimage = Path.GetFileName(startuppath);
+                    }
+                    SetDefaultPath();
+                    SearchImages();
+                    CountPicsInPath();
+                    LoadPicture(GetImageIndex(Path.Combine(startuppath, startupimage)));
+                }
+            }
+        }
+
         /// <summary>
         /// Default: Lädt das erste Bild
         /// </summary>
diff --git a/Mk0.Software.ImageSorter/Mk0.Software.ImageSorter.csproj b/Mk0.Software.ImageSorter/Mk0.Software.ImageSorter.csproj
index 89e6b0e..37b3458 100644
--- a/Mk0.Software.ImageSorter/Mk0.Software.ImageSorter.csproj
+++ b/Mk0.Software.ImageSorter/Mk0.Software.ImageSorter.csproj
@@ -95,10 +95,6 @@
       <HintPath>..\Mk0.Tools.Randomization.dll</HintPath>
       <EmbedInteropTypes>False</EmbedInteropTypes>
     </Reference>
-    <Reference Include="Mk0.Tools.SingleInstance">
-      <HintPath>..\Mk0.Tools.SingleInstance.dll</HintPath>
-      <EmbedInteropTypes>False</EmbedInteropTypes>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="Microsoft.CSharp" />
@@ -175,7 +171,6 @@
     <Content Include="dll\Mk0.Tools.ImageCropper.dll" />
     <Content Include="dll\Mk0.Tools.Images.dll" />
     <Content Include="dll\Mk0.Tools.Randomization.dll" />
-    <Content Include="dll\Mk0.Tools.SingleInstance.dll" />
     <Content Include="Resources\bmp.ico" />
     <Content Include="Resources\gif.ico" />
     <Content Include="image.ico" />
diff --git a/Mk0.Software.ImageSorter/Program.cs b/Mk0.Software.ImageSorter/Program.cs
index b29ff39..b47ab2b 100644
--- a/Mk0.Software.ImageSorter/Program.cs
+++ b/Mk0.Software.ImageSorter/Program.cs
@@ -1,6 +1,5 @@
 using System;
-using System.Windows.Forms;
-using Mk0.Tools.SingleInstance;
+using Microsoft.VisualBasic.ApplicationServices;
 
 namespace Mk0.Software.ImageSorter
 {
@@ -12,9 +11,39 @@ namespace Mk0.Software.ImageSorter
         [STAThread]
         static void Main(string[] args)
         {
-            Application.EnableVisualStyles();
-            Application.SetCompatibleTextRenderingDefault(false);
-            SingleApplication.Run(args.Length == 0 ? new Main(string.Empty) : new Main(args[0]), Properties.Settings.Default.singleInstance);
+            App myApp = new App();
+            myApp.Run(args);
+        }
+
+        class App : WindowsFormsApplicationBase
+        {
+            public App()
+            {
+                IsSingleInstance = Properties.Settings.Default.singleInstance;
+                EnableVisualStyles = true;
+
+                ShutdownStyle = ShutdownMode.AfterMainFormCloses;
+                StartupNextInstance += new StartupNextInstanceEventHandler(SIApp_StartupNextInstance);
+            }
+
+            protected override void OnCreateMainForm()
+            {
+                MainForm = new Main();
+                ((Main)MainForm).Args = new string[CommandLineArgs.Count];
+                CommandLineArgs.CopyTo(((Main)MainForm).Args, 0);
+            }
+
+            protected void SIApp_StartupNextInstance(object sender, StartupNextInstanceEventArgs eventArgs)
+            {
+                string[] args = new string[eventArgs.CommandLine.Count];
+                eventArgs.CommandLine.CopyTo(args, 0);
+
+                object[] parameters = new object[2];
+                parameters[0] = MainForm;
+                parameters[1] = args;
+
+                MainForm.Invoke(new Main.ProcessParametersDelegate(((Main)MainForm).ProcessParameters), parameters);
+            }
         }
     }
 }
diff --git a/Mk0.Software.ImageSorter/Properties/AssemblyInfo.cs b/Mk0.Software.ImageSorter/Properties/AssemblyInfo.cs
index c25d0c0..e5ef9a9 100644
--- a/Mk0.Software.ImageSorter/Properties/AssemblyInfo.cs
+++ b/Mk0.Software.ImageSorter/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // Sie können alle Werte angeben oder die standardmäßigen Build- und Revisionsnummern 
 // übernehmen, indem Sie "*" eingeben:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.27.*")]
+[assembly: AssemblyVersion("1.28.*")]
 //[assembly: AssemblyFileVersion("1.6.0.0")]
diff --git a/Mk0.Software.ImageSorter/dll/Mk0.Tools.SingleInstance.dll b/Mk0.Software.ImageSorter/dll/Mk0.Tools.SingleInstance.dll
deleted file mode 100644
index 490cde1..0000000
Binary files a/Mk0.Software.ImageSorter/dll/Mk0.Tools.SingleInstance.dll and /dev/null differ