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diff --git a/OpenSim/Region/Framework/Scenes/Animation/AnimationSet.cs b/OpenSim/Region/Framework/Scenes/Animation/AnimationSet.cs
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+++ b/OpenSim/Region/Framework/Scenes/Animation/AnimationSet.cs
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+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Text;
+using log4net;
+using OpenMetaverse;
+using OpenMetaverse.StructuredData;
+
+using OpenSim.Framework;
+
+using Animation = OpenSim.Framework.Animation;
+
+namespace OpenSim.Region.Framework.Scenes.Animation
+{
+    [Serializable]
+    public class AnimationSet
+    {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private OpenSim.Framework.Animation m_implicitDefaultAnimation = new OpenSim.Framework.Animation();
+        private OpenSim.Framework.Animation m_defaultAnimation = new OpenSim.Framework.Animation();
+        private List<OpenSim.Framework.Animation> m_animations = new List<OpenSim.Framework.Animation>();
+
+        public OpenSim.Framework.Animation DefaultAnimation 
+        {
+            get { return m_defaultAnimation; } 
+        }
+        
+        public OpenSim.Framework.Animation ImplicitDefaultAnimation 
+        {
+            get { return m_implicitDefaultAnimation; } 
+        }
+        
+        public AnimationSet()
+        {
+            ResetDefaultAnimation();
+        }
+
+        public AnimationSet(OSDArray pArray)
+        {
+            ResetDefaultAnimation();
+            FromOSDArray(pArray);
+        }
+
+        public bool HasAnimation(UUID animID)
+        {
+            if (m_defaultAnimation.AnimID == animID)
+                return true;
+
+            for (int i = 0; i < m_animations.Count; ++i)
+            {
+                if (m_animations[i].AnimID == animID)
+                    return true;
+            }
+
+            return false;
+        }
+
+        public bool Add(UUID animID, int sequenceNum, UUID objectID)
+        {
+            lock (m_animations)
+            {
+                if (!HasAnimation(animID))
+                {
+                    m_animations.Add(new OpenSim.Framework.Animation(animID, sequenceNum, objectID));
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// Remove the specified animation
+        /// </summary>
+        /// <param name='animID'></param>
+        /// <param name='allowNoDefault'>
+        /// If true, then the default animation can be entirely removed. 
+        /// If false, then removing the default animation will reset it to the simulator default (currently STAND).
+        /// </param>
+        public bool Remove(UUID animID, bool allowNoDefault)
+        {
+            lock (m_animations)
+            {
+                if (m_defaultAnimation.AnimID == animID)
+                {
+                    if (allowNoDefault)
+                        m_defaultAnimation = new OpenSim.Framework.Animation(UUID.Zero, 1, UUID.Zero);
+                    else
+                        ResetDefaultAnimation();
+                }
+                else if (HasAnimation(animID))
+                {
+                    for (int i = 0; i < m_animations.Count; i++)
+                    {
+                        if (m_animations[i].AnimID == animID)
+                        {
+                            m_animations.RemoveAt(i);
+                            return true;
+                        }
+                    }
+                }
+            }
+            return false;
+        }
+
+        public void Clear()
+        {
+            ResetDefaultAnimation();
+            m_animations.Clear();
+        }
+
+        /// <summary>
+        /// The default animation is reserved for "main" animations
+        /// that are mutually exclusive, e.g. flying and sitting.
+        /// </summary>
+        public bool SetDefaultAnimation(UUID animID, int sequenceNum, UUID objectID)
+        {
+            if (m_defaultAnimation.AnimID != animID)
+            {
+                m_defaultAnimation = new OpenSim.Framework.Animation(animID, sequenceNum, objectID);
+                m_implicitDefaultAnimation = m_defaultAnimation;
+                return true;
+            }
+            return false;
+        }
+
+        // Called from serialization only
+        public void SetImplicitDefaultAnimation(UUID animID, int sequenceNum, UUID objectID)
+        {
+            m_implicitDefaultAnimation = new OpenSim.Framework.Animation(animID, sequenceNum, objectID);
+        }
+
+        protected bool ResetDefaultAnimation()
+        {
+            return TrySetDefaultAnimation("STAND", 1, UUID.Zero);
+        }
+
+        /// <summary>
+        /// Set the animation as the default animation if it's known
+        /// </summary>
+        public bool TrySetDefaultAnimation(string anim, int sequenceNum, UUID objectID)
+        {
+//            m_log.DebugFormat(
+//                "[ANIMATION SET]: Setting default animation {0}, sequence number {1}, object id {2}",
+//                anim, sequenceNum, objectID);
+
+            if (DefaultAvatarAnimations.AnimsUUID.ContainsKey(anim))
+            {
+                return SetDefaultAnimation(DefaultAvatarAnimations.AnimsUUID[anim], sequenceNum, objectID);
+            }
+            return false;
+        }
+
+        public void GetArrays(out UUID[] animIDs, out int[] sequenceNums, out UUID[] objectIDs)
+        {
+            lock (m_animations)
+            {
+                int defaultSize = 0;
+                if (m_defaultAnimation.AnimID != UUID.Zero)
+                    defaultSize++;
+
+                animIDs = new UUID[m_animations.Count + defaultSize];
+                sequenceNums = new int[m_animations.Count + defaultSize];
+                objectIDs = new UUID[m_animations.Count + defaultSize];
+
+                if (m_defaultAnimation.AnimID != UUID.Zero)
+                {
+                    animIDs[0] = m_defaultAnimation.AnimID;
+                    sequenceNums[0] = m_defaultAnimation.SequenceNum;
+                    objectIDs[0] = m_defaultAnimation.ObjectID;
+                }
+
+                for (int i = 0; i < m_animations.Count; ++i)
+                {
+                    animIDs[i + defaultSize] = m_animations[i].AnimID;
+                    sequenceNums[i + defaultSize] = m_animations[i].SequenceNum;
+                    objectIDs[i + defaultSize] = m_animations[i].ObjectID;
+                }
+            }
+        }
+
+        public OpenSim.Framework.Animation[] ToArray()
+        {
+            OpenSim.Framework.Animation[] theArray = new OpenSim.Framework.Animation[m_animations.Count];
+            uint i = 0;
+            try
+            {
+                foreach (OpenSim.Framework.Animation anim in m_animations)
+                    theArray[i++] = anim;
+            }
+            catch 
+            {
+                /* S%^t happens. Ignore. */ 
+            }
+            return theArray;
+        }
+
+        public void FromArray(OpenSim.Framework.Animation[] theArray)
+        {
+            foreach (OpenSim.Framework.Animation anim in theArray)
+                m_animations.Add(anim);
+        }
+
+        // Create representation of this AnimationSet as an OSDArray.
+        // First two entries in the array are the default and implicitDefault animations
+        //    followed by the other animations.
+        public OSDArray ToOSDArray()
+        {
+            OSDArray ret = new OSDArray();
+            ret.Add(DefaultAnimation.PackUpdateMessage());
+            ret.Add(ImplicitDefaultAnimation.PackUpdateMessage());
+
+            foreach (OpenSim.Framework.Animation anim in m_animations)
+                ret.Add(anim.PackUpdateMessage());
+
+            return ret;
+        }
+
+        public void FromOSDArray(OSDArray pArray)
+        {
+            this.Clear();
+
+            if (pArray.Count >= 1)
+            {
+                m_defaultAnimation = new OpenSim.Framework.Animation((OSDMap)pArray[0]);
+            }
+            if (pArray.Count >= 2)
+            {
+                m_implicitDefaultAnimation = new OpenSim.Framework.Animation((OSDMap)pArray[1]);
+            }
+            for (int ii = 2; ii < pArray.Count; ii++)
+            {
+                m_animations.Add(new OpenSim.Framework.Animation((OSDMap)pArray[ii]));
+            }
+        }
+
+        // Compare two AnimationSets and return 'true' if the default animations are the same
+        //     and all of the animations in the list are equal.
+        public override bool Equals(object obj)
+        {
+            AnimationSet other = obj as AnimationSet;
+            if (other != null)
+            {
+                if (this.DefaultAnimation.Equals(other.DefaultAnimation)
+                    && this.ImplicitDefaultAnimation.Equals(other.ImplicitDefaultAnimation))
+                {
+                    // The defaults are the same. Is the list of animations the same?
+                    OpenSim.Framework.Animation[] thisAnims = this.ToArray();
+                    OpenSim.Framework.Animation[] otherAnims = other.ToArray();
+                    if (thisAnims.Length == 0 && otherAnims.Length == 0)
+                        return true;    // the common case
+                    if (thisAnims.Length == otherAnims.Length)
+                    {
+                        // Do this the hard way but since the list is usually short this won't take long.
+                        foreach (OpenSim.Framework.Animation thisAnim in thisAnims)
+                        {
+                            bool found = false;
+                            foreach (OpenSim.Framework.Animation otherAnim in otherAnims)
+                            {
+                                if (thisAnim.Equals(otherAnim))
+                                {
+                                    found = true;
+                                    break;
+                                }
+                            }
+                            if (!found)
+                            {
+                                // If anything is not in the other list, these are not equal
+                                return false;
+                            }
+                        }
+                        // Found everything in the other list. Since lists are equal length, they must be equal.
+                        return true;
+                    }
+                }
+                return false;
+            }
+            // Don't know what was passed, but the base system will figure it out for me.
+            return base.Equals(obj);
+        }
+
+        public override int GetHashCode()
+        {
+            return base.GetHashCode();
+        }
+
+        public override string ToString()
+        {
+            StringBuilder buff = new StringBuilder();
+            buff.Append("dflt=");
+            buff.Append(DefaultAnimation.ToString());
+            buff.Append(",iDflt=");
+            if (DefaultAnimation.Equals(ImplicitDefaultAnimation))
+                buff.Append("same");
+            else
+                buff.Append(ImplicitDefaultAnimation.ToString());
+            if (m_animations.Count > 0)
+            {
+                buff.Append(",anims=");
+                bool firstTime = true;
+                foreach (OpenSim.Framework.Animation anim in m_animations)
+                {
+                    if (!firstTime)
+                        buff.Append(",");
+                    buff.Append("<");
+                    buff.Append(anim.ToString());
+                    buff.Append(">");
+                    firstTime = false;
+                }
+            }
+            return buff.ToString();
+        }
+    }
+}