diff --git a/FileMutex.cs b/FileMutex.cs
new file mode 100644
index 0000000..4d3b696
--- /dev/null
+++ b/FileMutex.cs
@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlubbFish.Utils {
+  public class FileMutex {
+    private static FileMutex instance;
+    private String filename;
+    private StreamWriter file;
+    private FileMutex() { }
+
+    public static FileMutex Instance {
+      get {
+        if(FileMutex.instance == null) {
+          FileMutex.instance = new FileMutex();
+        }
+        return FileMutex.instance;
+      }
+    }
+
+    public void setName(string name) {
+      string path = AppDomain.CurrentDomain.BaseDirectory;
+      this.filename = path + string.Join(string.Empty, Array.ConvertAll(new SHA512Managed().ComputeHash(Encoding.UTF8.GetBytes(name)), b => b.ToString("X2"))) + ".lock.txt";
+    }
+
+    public bool create() {
+      if(File.Exists(this.filename))
+        return false;
+      this.file = new StreamWriter(this.filename);
+      this.initFile();
+      return File.Exists(this.filename) && file != null;
+    }
+
+    private void initFile() {
+      this.file.Write("Created: " + DateTime.Now.ToUniversalTime()+"\n");
+      this.file.Flush();
+    }
+
+    public bool delete() {
+      this.file.Close();
+      File.Delete(this.filename);
+      return !File.Exists(this.filename);
+    }
+  }
+}
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
index f78913c..a08c1a0 100644
--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -10,7 +10,7 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("")]
 [assembly: AssemblyProduct("Utils")]
-[assembly: AssemblyCopyright("Copyright ©  2014 - 03.12.2016")]
+[assembly: AssemblyCopyright("Copyright ©  2014 - 03.03.2017")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
@@ -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("1.0.0.1")]
-[assembly: AssemblyFileVersion("1.0.0.1")]
+[assembly: AssemblyVersion("1.0.2.1")]
+[assembly: AssemblyFileVersion("1.0.2.1")]
diff --git a/Utils.csproj b/Utils.csproj
index 22e3a26..7afa00f 100644
--- a/Utils.csproj
+++ b/Utils.csproj
@@ -42,6 +42,7 @@
   <ItemGroup>
     <Compile Include="CmdArgs.cs" />
     <Compile Include="FileLogger.cs" />
+    <Compile Include="FileMutex.cs" />
     <Compile Include="InIReader.cs" />
     <Compile Include="OwnController.cs" />
     <Compile Include="OwnModel.cs" />
diff --git a/bin/Release/Utils.dll b/bin/Release/Utils.dll
index ddf2ca2..e24b721 100644
Binary files a/bin/Release/Utils.dll and b/bin/Release/Utils.dll differ