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diff --git a/UnityTests.Unity5/Assets/_Tests PRO/TempPro.unity b/UnityTests.Unity5/Assets/_Tests PRO/TempPro.unity
index e23c820..58cf064 100644
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diff --git a/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.cs b/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.cs
new file mode 100644
index 0000000..e676f46
--- /dev/null
+++ b/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.cs
@@ -0,0 +1,33 @@
+using UnityEngine;
+using System.Collections;
+using DG.Tweening;
+
+public class PortraitToLandscapeAtRuntime : BrainBase
+{
+	public RectTransform target;
+	Tween tween;
+
+	void Start()
+	{
+		CreateRTTween();
+		tween.Pause();
+	}
+
+	void OnGUI()
+	{
+		if (GUILayout.Button("Rewind")) DOTween.RewindAll();
+		if (GUILayout.Button("Restart")) tween.Restart();
+		if (GUILayout.Button("RT Recreate")) CreateRTTween();
+		if (GUILayout.Button("T Recreate")) CreateTween();
+	}
+
+	void CreateRTTween()
+	{
+		tween = target.DOAnchorPos(new Vector2(0, 50), 2).SetRelative().SetAutoKill(false);
+	}
+
+	void CreateTween()
+	{
+		tween = ((Transform)target).DOMove(new Vector2(0, 50), 2).SetRelative().SetAutoKill(false);
+	}
+}
\ No newline at end of file
diff --git a/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.cs.meta b/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.cs.meta
new file mode 100644
index 0000000..164632a
--- /dev/null
+++ b/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.cs.meta
@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 2ef197472500d8440ad7fad75d61a282
+timeCreated: 1429640495
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.unity b/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.unity
new file mode 100644
index 0000000..2dd8e8a
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diff --git a/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.unity.meta b/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.unity.meta
new file mode 100644
index 0000000..759d82e
--- /dev/null
+++ b/UnityTests.Unity5/Assets/_Tests/PortraitToLandscapeAtRuntime.unity.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 46ec2e75aee41d44c9d45f8fed38b280
+timeCreated: 1429640488
+licenseType: Free
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/_DOTween.Assembly/DOTween/Core/TweenManager.cs b/_DOTween.Assembly/DOTween/Core/TweenManager.cs
index ee8d0e2..77ef195 100644
--- a/_DOTween.Assembly/DOTween/Core/TweenManager.cs
+++ b/_DOTween.Assembly/DOTween/Core/TweenManager.cs
@@ -687,7 +687,7 @@ namespace DG.Tweening.Core
             List<Tween> ts = new List<Tween>(len);
             for (int i = 0; i < len; ++i) {
                 Tween t = _activeTweens[i];
-                if (t.id.Equals(id)) ts.Add(t);
+                if (t != null && Equals(id, t.id)) ts.Add(t);
             }
             if (ts.Count > 0) return ts;
             return null;
diff --git a/_DOTween.Assembly/DOTween/DOTween.cs b/_DOTween.Assembly/DOTween/DOTween.cs
index 656f4ab..ca3e9de 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 = "1.0.605";
+        public static readonly string Version = "1.0.606";
 
         ///////////////////////////////////////////////
         // Options ////////////////////////////////////
@@ -843,6 +843,8 @@ namespace DG.Tweening
         /// </summary>
         public static List<Tween> TweensById(object id)
         {
+            if (id == null) return null;
+
             return TweenManager.GetTweensById(id);
         }
 
diff --git a/_DOTween.Assembly/bin/DOTween.dll b/_DOTween.Assembly/bin/DOTween.dll
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