I accidentally all the things. Init server in the right order.

Piston/PluginManager.cs

@@ -33,11 +33,6 @@ namespace Piston
         private void GetPluginList()
         {
             _plugins = typeof(MyPlugins).GetField("m_plugins", BindingFlags.Static | BindingFlags.NonPublic)?.GetValue(null) as List<IPlugin>;
-            if (_plugins == null)
-            {
-                typeof(MyPlugins).TypeInitializer.Invoke(null, null);
-                GetPluginList();
-            }
         }
 
         /// <summary>

PistonServer/PistonServer.cs

@@ -12,6 +12,7 @@ namespace Piston.Server
     /// </summary>
     public static class PistonServer
     {
+        public static MainWindow UI;
         public static ServerManager Server;
         public static MultiplayerManager Multiplayer;
         public static PluginManager Plugins;
@@ -27,6 +28,7 @@ namespace Piston.Server
                 Server = new ServerManager();
                 Multiplayer = new MultiplayerManager(Server);
                 Plugins = new PluginManager();
+                UI = new MainWindow();
             }
         }
 

PistonServer/Program.cs

@@ -14,15 +14,11 @@ namespace Piston.Server
 {
     public static class Program
     {
-        public static MainWindow UserInterface = new MainWindow();
-        public static Dispatcher MainDispatcher { get; private set; }
-
         [STAThread]
         public static void Main(string[] args)
         {
-            Logger.Write("Initializing");
+            PistonServer.Init();
             PistonServer.Server.RunArgs = new[] { "-console" };
-            MainDispatcher = Dispatcher.CurrentDispatcher;
 
             if (args.Contains("-nogui"))
 
@@ -39,7 +35,7 @@ namespace Piston.Server
         public static void StartUI()
         {
             Thread.CurrentThread.Name = "UI Thread";
-            UserInterface.Show();
+            PistonServer.UI.Show();
         }
 
         public static void FullRestart()