diff --git a/OpenSim/Client/MXP/ClientStack/MXPClientView.cs b/OpenSim/Client/MXP/ClientStack/MXPClientView.cs
index e5f747437d..1cbf91197b 100644
--- a/OpenSim/Client/MXP/ClientStack/MXPClientView.cs
+++ b/OpenSim/Client/MXP/ClientStack/MXPClientView.cs
@@ -1622,6 +1622,10 @@ namespace OpenSim.Client.MXP.ClientStack
         {
         }
 
+        public void RefreshGroupMembership()
+        {
+        }
+
         public void SendUseCachedMuteList()
         {
         }
diff --git a/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs b/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs
index 4c54f3339e..167d081b06 100644
--- a/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs
+++ b/OpenSim/Client/VWoHTTP/ClientStack/VWHClientView.cs
@@ -1077,6 +1077,11 @@ namespace OpenSim.Client.VWoHTTP.ClientStack
             throw new System.NotImplementedException();
         }
 
+        public void RefreshGroupMembership()
+        {
+            throw new System.NotImplementedException();
+        }
+
         public void SendAvatarNotesReply(UUID targetID, string text)
         {
             throw new System.NotImplementedException();
diff --git a/OpenSim/Framework/IClientAPI.cs b/OpenSim/Framework/IClientAPI.cs
index 28d5502b2c..9b137b774c 100644
--- a/OpenSim/Framework/IClientAPI.cs
+++ b/OpenSim/Framework/IClientAPI.cs
@@ -1141,6 +1141,7 @@ namespace OpenSim.Framework
         void SendClassifiedInfoReply(UUID classifiedID, UUID creatorID, uint creationDate, uint expirationDate, uint category, string name, string description, UUID parcelID, uint parentEstate, UUID snapshotID, string simName, Vector3 globalPos, string parcelName, byte classifiedFlags, int price);
 
         void SendAgentDropGroup(UUID groupID);
+        void RefreshGroupMembership();
         void SendAvatarNotesReply(UUID targetID, string text);
         void SendAvatarPicksReply(UUID targetID, Dictionary<UUID, string> picks);
         void SendPickInfoReply(UUID pickID,UUID creatorID, bool topPick, UUID parcelID, string name, string desc, UUID snapshotID, string user, string originalName, string simName, Vector3 posGlobal, int sortOrder, bool enabled);
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index a157df5811..72cb5c8997 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -10512,7 +10512,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         #endregion
 
-        private void RefreshGroupMembership()
+        public void RefreshGroupMembership()
         {
             if (m_GroupsModule != null)
             {
diff --git a/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs b/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
index ddb27fe78b..3e9195ece8 100644
--- a/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
+++ b/OpenSim/Region/Examples/SimpleModule/MyNpcCharacter.cs
@@ -1074,6 +1074,10 @@ namespace OpenSim.Region.Examples.SimpleModule
         {
         }
 
+        public void RefreshGroupMembership()
+        {
+        }
+
         public void SendUseCachedMuteList()
         {
         }
diff --git a/OpenSim/Region/Framework/Interfaces/IGroupsModule.cs b/OpenSim/Region/Framework/Interfaces/IGroupsModule.cs
index 69359243cb..8183828321 100644
--- a/OpenSim/Region/Framework/Interfaces/IGroupsModule.cs
+++ b/OpenSim/Region/Framework/Interfaces/IGroupsModule.cs
@@ -32,10 +32,12 @@ using OpenSim.Framework;
 namespace OpenSim.Region.Framework.Interfaces
 {
     public delegate void NewGroupNotice(UUID groupID, UUID noticeID);
+    public delegate void GroupChange(UUID groupID);
 
     public interface IGroupsModule
     {
         event NewGroupNotice OnNewGroupNotice;
+        event GroupChange OnGroupChange;
 
         void ActivateGroup(IClientAPI remoteClient, UUID groupID);
         List<GroupTitlesData> GroupTitlesRequest(IClientAPI remoteClient, UUID groupID);
diff --git a/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsModule.cs b/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsModule.cs
index 3476cdb89d..2a3df8c3ca 100644
--- a/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsModule.cs
+++ b/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsModule.cs
@@ -541,6 +541,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.XmlRpcGroups
         #region IGroupsModule Members
 
         public event NewGroupNotice OnNewGroupNotice;
+        public event GroupChange OnGroupChange;
 
         public GroupRecord GetGroupRecord(UUID GroupID)
         {
diff --git a/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs b/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
index d3be827d1a..f529c9e3c6 100644
--- a/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
+++ b/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
@@ -1074,6 +1074,10 @@ namespace OpenSim.Region.OptionalModules.World.NPC
         {
         }
 
+        public void RefreshGroupMembership()
+        {
+        }
+
         public void SendUseCachedMuteList()
         {
         }
diff --git a/OpenSim/Tests/Common/Mock/TestClient.cs b/OpenSim/Tests/Common/Mock/TestClient.cs
index 256d6fd0ae..f60728433c 100644
--- a/OpenSim/Tests/Common/Mock/TestClient.cs
+++ b/OpenSim/Tests/Common/Mock/TestClient.cs
@@ -1116,6 +1116,10 @@ namespace OpenSim.Tests.Common.Mock
         {
         }
 
+        public void RefreshGroupMembership()
+        {
+        }
+
         public void SendUseCachedMuteList()
         {
         }