[bugfix] Fixed IndexOutOfRange error in case a Kill was called from within a Kill operation

UnityTests.Unity5/Assets/_Tests/Bugs/IndexOutOfRangeOnKill.cs

@@ -0,0 +1,22 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using DG.Tweening;
+
+public class IndexOutOfRangeOnKill : BrainBase
+{
+	IEnumerator Start()
+    {
+        transform.DOScale(Vector3.zero, 1000).OnKill(() => transform.gameObject.SetActive(false));
+        yield return new WaitForSeconds(1.5f);
+        transform.DOKill();
+        Debug.Log("START COMPLETION");
+    }
+
+
+    void OnDisable()
+    {
+    	Debug.Log("DISABLE");
+        transform.DOKill();
+    }
+}

UnityTests.Unity5/Assets/_Tests/Bugs/IndexOutOfRangeOnKill.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 8554fbc54189c474d984b52a42025763
+timeCreated: 1487584236
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityTests.Unity5/Assets/_Tests/Bugs/IndexOutOfRangeOnKill.unity.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: a571c26de03502e448b5fd36db17cc82
+timeCreated: 1487584203
+licenseType: Pro
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

_DOTween.Assembly/DOTween/Core/TweenManager.cs

@@ -468,12 +468,12 @@ namespace DG.Tweening.Core
                     switch (operationType) {
                     case OperationType.Despawn:
                         totInvolved++;
-                        if (isUpdateLoop) t.active = false; // Just mark it for killing, so the update loop will take care of it
-                        else {
+                        t.active = false; // Mark it as inactive immediately, so eventual kills called inside a kill won't have effect
+//                        if (isUpdateLoop) t.active = false; // Just mark it for killing, so the update loop will take care of it
+                        if (isUpdateLoop) break; // Just mark it for killing, the update loop will take care of the rest
                         Despawn(t, false);
                         hasDespawned = true;
                         _KillList.Add(t);
-                        }
                         break;
                     case OperationType.Complete:
                         bool hasAutoKill = t.autoKill;

_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 = "1.1.570";
+        public static readonly string Version = "1.1.575";
 
         ///////////////////////////////////////////////
         // Options ////////////////////////////////////