diff --git a/PCK-Studio/Extensions/ImageExtensions.cs b/PCK-Studio/Extensions/ImageExtensions.cs
index a1d2fd84..88bbf778 100644
--- a/PCK-Studio/Extensions/ImageExtensions.cs
+++ b/PCK-Studio/Extensions/ImageExtensions.cs
@@ -1,3 +1,20 @@
+/* Copyright (c) 2023-present miku-666
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1.The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+**/
 using System;
 using System.Drawing;
 using System.Diagnostics;
diff --git a/PCK-Studio/Features/CemuPanel.cs b/PCK-Studio/Features/CemuPanel.cs
index e4e7d215..3dcf5117 100644
--- a/PCK-Studio/Features/CemuPanel.cs
+++ b/PCK-Studio/Features/CemuPanel.cs
@@ -1,11 +1,27 @@
-using System;
+/* Copyright (c) 2023-present miku-666
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1.The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+**/
+using System;
 using System.Xml;
 using System.IO;
 using System.Linq;
 using System.Windows.Forms;
 using PckStudio.Extensions;
 using PckStudio.Classes.Misc;
-using System.Xml.Serialization;
 using System.Diagnostics;
 
 namespace PckStudio.Features
diff --git a/PCK-Studio/Features/PckManager.cs b/PCK-Studio/Features/PckManager.cs
index 41f72ac8..6e6cacb8 100644
--- a/PCK-Studio/Features/PckManager.cs
+++ b/PCK-Studio/Features/PckManager.cs
@@ -1,4 +1,4 @@
-/* Copyright (c) 2022-present miku-666
+/* Copyright (c) 2023-present miku-666
  * This software is provided 'as-is', without any express or implied
  * warranty. In no event will the authors be held liable for any damages
  * arising from the use of this software.
diff --git a/PCK-Studio/Forms/Editor/AnimationPictureBox.cs b/PCK-Studio/Forms/Editor/AnimationPictureBox.cs
index 4985525f..d5fa6cfd 100644
--- a/PCK-Studio/Forms/Editor/AnimationPictureBox.cs
+++ b/PCK-Studio/Forms/Editor/AnimationPictureBox.cs
@@ -1,4 +1,21 @@
-using System;
+/* Copyright (c) 2023-present miku-666
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1.The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+**/
+using System;
 using System.Threading;
 using System.Diagnostics;
 using System.Windows.Forms;
@@ -14,6 +31,14 @@ namespace PckStudio.Forms.Editor
     {
 		public bool IsPlaying => _isPlaying;
 
+		private const int TickInMillisecond = 50; // 1 InGame tick
+
+        private bool _isPlaying = false;
+		private int currentAnimationFrameIndex = 0;
+		private Animation.Frame currentFrame;
+		private Animation _animation;
+		private CancellationTokenSource cts = new CancellationTokenSource();
+
         public void Start(Animation animation)
 		{
 			_animation = animation;
@@ -36,14 +61,6 @@ namespace PckStudio.Forms.Editor
             currentFrame = SetAnimationFrame(index);
 		}
 
-		private const int TickInMillisecond = 50; // 1 InGame tick
-
-        private bool _isPlaying = false;
-		private int currentAnimationFrameIndex = 0;
-		private Animation.Frame currentFrame;
-		private Animation _animation;
-		private CancellationTokenSource cts = new CancellationTokenSource();
-
 		protected override void OnPaint(PaintEventArgs pe)
         {
 			pe.Graphics.InterpolationMode = InterpolationMode.NearestNeighbor;
diff --git a/PCK-Studio/Forms/Editor/GameRuleFileEditor.cs b/PCK-Studio/Forms/Editor/GameRuleFileEditor.cs
index 28136324..5e1e7872 100644
--- a/PCK-Studio/Forms/Editor/GameRuleFileEditor.cs
+++ b/PCK-Studio/Forms/Editor/GameRuleFileEditor.cs
@@ -1,4 +1,21 @@
-using System;
+/* Copyright (c) 2023-present miku-666
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1.The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+**/
+using System;
 using System.Collections.Generic;
 using System.Drawing;
 using System.IO;
@@ -11,7 +28,6 @@ using OMI.Workers.GameRule;
 using System.Diagnostics;
 using OMI.Formats.Pck;
 using PckStudio.Forms.Additional_Popups;
-using PckStudio.Models;
 using PckStudio.Properties;
 
 namespace PckStudio.Forms.Editor
@@ -54,12 +70,9 @@ namespace PckStudio.Forms.Editor
         public GameRuleFileEditor(PckFile.FileData file) : this()
         {
             _pckfile = file;
-            if (file.Size > 0)
+            using (var stream = new MemoryStream(file.Data))
             {
-                using (var stream = new MemoryStream(file.Data))
-                {
-                    _file = OpenGameRuleFile(stream);
-                }
+                _file = OpenGameRuleFile(stream);
             }
         }
 
diff --git a/PCK-Studio/Internal/Profiler.cs b/PCK-Studio/Internal/Profiler.cs
index 922f05af..1c503d26 100644
--- a/PCK-Studio/Internal/Profiler.cs
+++ b/PCK-Studio/Internal/Profiler.cs
@@ -1,4 +1,21 @@
-using System;
+/* Copyright (c) 2023-present miku-666
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1.The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+**/
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
diff --git a/PCK-Studio/Internal/SettingsManager.cs b/PCK-Studio/Internal/SettingsManager.cs
index a8e611b2..e0a7640c 100644
--- a/PCK-Studio/Internal/SettingsManager.cs
+++ b/PCK-Studio/Internal/SettingsManager.cs
@@ -1,11 +1,24 @@
-using System;
+/* Copyright (c) 2023-present miku-666
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1.The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+**/
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Configuration;
-using System.Diagnostics;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using PckStudio.Properties;
 
 namespace PckStudio.Internal