diff --git a/Changelog.txt b/Changelog.txt
index 82f8b02..17a0671 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -1,5 +1,8 @@
 ChangeLog
 
+1.1.6.4
+	Fixed memory leak caused by not removing callbacks from GameEvents
+
 1.1.6.3
 	Renamed DLL for CKAN compatibility
 	Added AssemblyFileVersion
diff --git a/GameData/PartCommanderContinued/PartCommanderContinued.version b/GameData/PartCommanderContinued/PartCommanderContinued.version
index 1321b99..adb59ea 100644
--- a/GameData/PartCommanderContinued/PartCommanderContinued.version
+++ b/GameData/PartCommanderContinued/PartCommanderContinued.version
@@ -10,7 +10,7 @@
     "MAJOR": 1,
     "MINOR": 1,
     "PATCH": 6,
-    "BUILD": 3
+    "BUILD": 4
   },
   "KSP_VERSION": {
     "MAJOR": 1,
diff --git a/PartCommanderContinued.version b/PartCommanderContinued.version
index 1321b99..adb59ea 100644
--- a/PartCommanderContinued.version
+++ b/PartCommanderContinued.version
@@ -10,7 +10,7 @@
     "MAJOR": 1,
     "MINOR": 1,
     "PATCH": 6,
-    "BUILD": 3
+    "BUILD": 4
   },
   "KSP_VERSION": {
     "MAJOR": 1,
diff --git a/PartCommanderContinued/AssemblyVersion.cs b/PartCommanderContinued/AssemblyVersion.cs
index 0b794a2..4afd0c9 100644
--- a/PartCommanderContinued/AssemblyVersion.cs
+++ b/PartCommanderContinued/AssemblyVersion.cs
@@ -1,14 +1,9 @@
 
-
-
-
-
-
  // This code was generated by a tool. Any changes made manually will be lost
  // the next time this code is regenerated.
  // 
   
  using System.Reflection;
 
- [assembly: AssemblyVersion("1.1.6.3")]
- [assembly: AssemblyFileVersion("1.1.6.3")]
+ [assembly: AssemblyVersion("1.1.6.4")]
+ [assembly: AssemblyFileVersion("1.1.6.4")]
diff --git a/PartCommanderContinued/PartCommander.cs b/PartCommanderContinued/PartCommander.cs
index 2103105..38ad98f 100644
--- a/PartCommanderContinued/PartCommander.cs
+++ b/PartCommanderContinued/PartCommander.cs
@@ -329,11 +329,11 @@ public void OnGUI()
                     modStyle = modStyleKSP;
                 }
             }
-            
+
             // Make sure we have something to show
             if (visibleUI && FlightGlobals.ActiveVessel != null && currentWindow != null && PCScenario.Instance != null && PCScenario.Instance.gameSettings.visibleWindow)
             {
-                    GUI.skin = modStyle.skin;
+                GUI.skin = modStyle.skin;
                 currentWindow.windowRect = ClickThruBlocker.GUILayoutWindow(currentWindow.windowId, currentWindow.windowRect, mainWindow, "");
                 // Set the default location/size for new windows to be the same as this one
                 PCScenario.Instance.gameSettings.windowDefaultRect = currentWindow.windowRect;
@@ -377,6 +377,10 @@ protected void OnDestroy()
 
             GameEvents.onGameSceneLoadRequested.Remove(onSceneChange);
 
+            GameEvents.onShowUI.Remove(showUI);
+            GameEvents.onHideUI.Remove(hideUI);
+            GameEvents.onVesselWasModified.Remove(triggerUpdateParts);
+            GameEvents.onVesselChange.Remove(triggerUpdateParts);
         }
 
         // ------------------------------------------ Application Launcher / UI ---------------------------------------
@@ -760,7 +764,7 @@ private void getActiveParts()
                         //foreach (PartModule pm in p.Modules)
                         {
                             PartModule pm = p.Modules[pmi];
-     
+
                             if (includePart)
                             {
                                 // Part was already included, so break out
@@ -1030,7 +1034,7 @@ private int showEvents(Part p, bool symLock, string multiEngineMode)
             }
             return eventCount;
         }
-        
+
         static Color btnNrml = new Color(34f / 255f, 199f / 255f, 222f / 255f, 1);
         static Texture2D BtnNrmlTex;
 
@@ -1077,7 +1081,7 @@ private void showEvent(Part p, bool symLock, PartModule pm, BaseEvent e, string
 
 #endif
             if (GUILayout.Button("", /* bStyle, */  GUILayout.Width(50), GUILayout.Height(15)))
-            {               
+            {
                 if (symLock)
                 {
                     for (int i = 0; i < FlightGlobals.ActiveVessel.Parts.Count; i++)