diff --git a/Assets/SteamVR/Input/Editor/SteamVR_Skeleton_PoserEditor.cs b/Assets/SteamVR/Input/Editor/SteamVR_Skeleton_PoserEditor.cs
index 68793f8..d7829ec 100644
--- a/Assets/SteamVR/Input/Editor/SteamVR_Skeleton_PoserEditor.cs
+++ b/Assets/SteamVR/Input/Editor/SteamVR_Skeleton_PoserEditor.cs
@@ -1,9 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-using UnityEditor;
+using UnityEditor;
 using UnityEngine;
 
 namespace Valve.VR
@@ -405,8 +400,15 @@ namespace Valve.VR
             dest.rightHand.rotation = source.rightHand.rotation;
             for (int boneIndex = 0; boneIndex < boneNum; boneIndex++)
             {
-                dest.rightHand.bonePositions[boneIndex] = source.rightHand.bonePositions[boneIndex];
-                dest.rightHand.boneRotations[boneIndex] = source.rightHand.boneRotations[boneIndex];
+                if (boneIndex < dest.rightHand.bonePositions.Length && boneIndex < source.rightHand.bonePositions.Length)
+                {
+                    dest.rightHand.bonePositions[boneIndex] = source.rightHand.bonePositions[boneIndex];
+                }
+                if (boneIndex < dest.rightHand.boneRotations.Length && boneIndex < source.rightHand.boneRotations.Length)
+                {
+                    dest.rightHand.boneRotations[boneIndex] = source.rightHand.boneRotations[boneIndex];
+                }
+
                 EditorUtility.DisplayProgressBar("Copying...", "Copying right hand pose", (float)boneIndex / (float)boneNum / 2f);
             }
             dest.rightHand.thumbFingerMovementType = source.rightHand.thumbFingerMovementType;
@@ -421,8 +423,14 @@ namespace Valve.VR
             dest.leftHand.rotation = source.leftHand.rotation;
             for (int boneIndex = 0; boneIndex < boneNum; boneIndex++)
             {
-                dest.leftHand.bonePositions[boneIndex] = source.leftHand.bonePositions[boneIndex];
-                dest.leftHand.boneRotations[boneIndex] = source.leftHand.boneRotations[boneIndex];
+                if (boneIndex < dest.rightHand.bonePositions.Length && boneIndex < source.rightHand.bonePositions.Length)
+                {
+                    dest.rightHand.bonePositions[boneIndex] = source.rightHand.bonePositions[boneIndex];
+                }
+                if (boneIndex < dest.rightHand.boneRotations.Length && boneIndex < source.rightHand.boneRotations.Length)
+                {
+                    dest.rightHand.boneRotations[boneIndex] = source.rightHand.boneRotations[boneIndex];
+                }
                 EditorUtility.DisplayProgressBar("Copying...", "Copying left hand pose", (float)boneIndex / (float)boneNum / 2f);
             }
             dest.leftHand.thumbFingerMovementType = source.leftHand.thumbFingerMovementType;