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diff --git a/UnityTests.Unity5/Assets/Demigiant/DOTween/DOTween.dll b/UnityTests.Unity5/Assets/Demigiant/DOTween/DOTween.dll
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diff --git a/UnityTests.Unity5/Assets/Demigiant/DOTween/Editor/DOTweenEditor.dll b/UnityTests.Unity5/Assets/Demigiant/DOTween/Editor/DOTweenEditor.dll
index c5acd97..99ec8a5 100644
Binary files a/UnityTests.Unity5/Assets/Demigiant/DOTween/Editor/DOTweenEditor.dll and b/UnityTests.Unity5/Assets/Demigiant/DOTween/Editor/DOTweenEditor.dll differ
diff --git a/UnityTests.Unity5/Assets/Demigiant/DOTween/Editor/DOTweenEditor.dll.mdb b/UnityTests.Unity5/Assets/Demigiant/DOTween/Editor/DOTweenEditor.dll.mdb
index 2688a0c..1028cc9 100644
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diff --git a/_DOTween.Assembly/DOTween/DOTween.cs b/_DOTween.Assembly/DOTween/DOTween.cs
index 21ddf79..e7e2a85 100644
--- a/_DOTween.Assembly/DOTween/DOTween.cs
+++ b/_DOTween.Assembly/DOTween/DOTween.cs
@@ -32,7 +32,7 @@ namespace DG.Tweening
     public class DOTween
     {
         /// <summary>DOTween's version</summary>
-        public static readonly string Version = "1.1.580";
+        public static readonly string Version = "1.1.590";
 
         ///////////////////////////////////////////////
         // Options ////////////////////////////////////
diff --git a/_DOTween.Assembly/DOTweenEditor/DOTweenSetupMenuItem.cs b/_DOTween.Assembly/DOTweenEditor/DOTweenSetupMenuItem.cs
index 301a8b0..1b5e9f5 100644
--- a/_DOTween.Assembly/DOTweenEditor/DOTweenSetupMenuItem.cs
+++ b/_DOTween.Assembly/DOTweenEditor/DOTweenSetupMenuItem.cs
@@ -83,6 +83,23 @@ namespace DG.DOTweenEditor
             SetupComplete(addonsDir, proAddonsDir, totImported);
         }
 
+        // Uses reflection to call DOTweenPro's AddGlobalDefine method (because older version of Unity didn't have it)
+        public static void ProEditor_AddGlobalDefine(string id)
+        {
+            if (!EditorUtils.hasPro || ProEditorAssembly() == null) return;
+
+            Type type = _proEditorAssembly.GetType("DG.DOTweenEditor.Core.ProEditorUtils");
+            type.GetMethod("AddGlobalDefine", BindingFlags.Public | BindingFlags.Static).Invoke(null, new object[] { id });
+        }
+        // Uses reflection to call DOTweenPro's RemoveGlobalDefine method (because older version of Unity didn't have it)
+        public static void ProEditor_RemoveGlobalDefine(string id)
+        {
+            if (!EditorUtils.hasPro || ProEditorAssembly() == null) return;
+
+            Type type = _proEditorAssembly.GetType("DG.DOTweenEditor.Core.ProEditorUtils");
+            type.GetMethod("RemoveGlobalDefine", BindingFlags.Public | BindingFlags.Static).Invoke(null, new object[] { id });
+        }
+
         static void SetupComplete(string addonsDir, string proAddonsDir, int totImported)
         {
             int totRemoved = 0;
@@ -186,21 +203,5 @@ namespace DG.DOTweenEditor
             if (_proEditorAssembly == null) _proEditorAssembly = Assembly.LoadFile(EditorUtils.dotweenProDir + "Editor" + EditorUtils.pathSlash + "DOTweenProEditor.dll");
             return _proEditorAssembly;
         }
-        // Uses reflection to call DOTweenPro's AddGlobalDefine method (because older version of Unity didn't have it)
-        static void ProEditor_AddGlobalDefine(string id)
-        {
-            if (!EditorUtils.hasPro || ProEditorAssembly() == null) return;
-
-            Type type = _proEditorAssembly.GetType("DG.DOTweenEditor.Core.ProEditorUtils");
-            type.GetMethod("AddGlobalDefine", BindingFlags.Public | BindingFlags.Static).Invoke(null, new object[] { id });
-        }
-        // Uses reflection to call DOTweenPro's RemoveGlobalDefine method (because older version of Unity didn't have it)
-        static void ProEditor_RemoveGlobalDefine(string id)
-        {
-            if (!EditorUtils.hasPro || ProEditorAssembly() == null) return;
-
-            Type type = _proEditorAssembly.GetType("DG.DOTweenEditor.Core.ProEditorUtils");
-            type.GetMethod("RemoveGlobalDefine", BindingFlags.Public | BindingFlags.Static).Invoke(null, new object[] { id });
-        }
     }
 }
\ No newline at end of file
diff --git a/_DOTween.Assembly/DOTweenEditor/DOTweenUtilityWindow.cs b/_DOTween.Assembly/DOTweenEditor/DOTweenUtilityWindow.cs
index dbe1bf1..ab2afb6 100644
--- a/_DOTween.Assembly/DOTweenEditor/DOTweenUtilityWindow.cs
+++ b/_DOTween.Assembly/DOTweenEditor/DOTweenUtilityWindow.cs
@@ -11,7 +11,32 @@ using UnityEngine;
 
 namespace DG.DOTweenEditor
 {
-    public class UtilityWindowProcessor : AssetPostprocessor
+    public class UtilityWindowModificationProcessor : AssetModificationProcessor
+    {
+        // Checks if deleted folder contains DOTween Pro and in case removes scripting define symbols
+        static AssetDeleteResult OnWillDeleteAsset(string asset, RemoveAssetOptions options)
+        {
+            // Check if asset is a directory
+            string dir = EditorUtils.ADBPathToFullPath(asset);
+            if (!Directory.Exists(dir)) return AssetDeleteResult.DidNotDelete;
+            // Check if directory contains DOTweenPro.dll
+            string[] files = Directory.GetFiles(dir, "DOTween.dll", SearchOption.AllDirectories);
+            int len = files.Length;
+            bool containsDOTween = false;
+            for (int i = 0; i < len; ++i) {
+                if (!files[i].EndsWith("DOTween.dll")) continue;
+                containsDOTween = true;
+                break;
+            }
+            if (!containsDOTween) return AssetDeleteResult.DidNotDelete;
+            // DOTween found: remove scripting define symbols
+            DOTweenSetupMenuItem.ProEditor_RemoveGlobalDefine("DOTWEEN_TK2D");
+            DOTweenSetupMenuItem.ProEditor_RemoveGlobalDefine("DOTWEEN_TMP");
+            return AssetDeleteResult.DidNotDelete;
+        }
+    }
+
+    public class UtilityWindowPostProcessor : AssetPostprocessor
     {
         static bool _setupDialogRequested; // Used to prevent OnPostProcessAllAssets firing twice (because of a Unity bug/feature)
 
diff --git a/_DOTween.Assembly/bin/DOTween.dll b/_DOTween.Assembly/bin/DOTween.dll
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