diff --git a/OpenSim/Framework/IClientAPI.cs b/OpenSim/Framework/IClientAPI.cs
index 0672014c0b..9bf51f889c 100644
--- a/OpenSim/Framework/IClientAPI.cs
+++ b/OpenSim/Framework/IClientAPI.cs
@@ -735,6 +735,8 @@ namespace OpenSim.Framework
 
         Dictionary<UUID, ulong> GetGroupPowers();
 
+        void SetGroupPowers(Dictionary<UUID, ulong> powers);
+
         ulong GetGroupPowers(UUID groupID);
 
         bool IsGroupMember(UUID GroupID);
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
index 2026f78d68..0bb5dc68ea 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
@@ -5790,6 +5790,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
+        public void SetGroupPowers(Dictionary<UUID, ulong> powers)
+        {
+            lock(m_groupPowers)
+            {
+                m_groupPowers.Clear();
+                m_groupPowers = powers;
+            }       
+        }
+
         public ulong GetGroupPowers(UUID groupID)
         {
             if (groupID == ActiveGroupId)
diff --git a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
index 7c08d0836c..50be3aced7 100644
--- a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
+++ b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
@@ -589,7 +589,9 @@ namespace OpenSim.Region.OptionalModules.Agent.InternetRelayClientView.Server
         {
             return new Dictionary<UUID, ulong>();
         }
-                
+        
+        public void SetGroupPowers(Dictionary<UUID, ulong> powers) { }        
+
         public ulong GetGroupPowers(UUID groupID)
         {
             return 0;
diff --git a/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs b/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
index a84520fe9b..4275192a33 100644
--- a/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
+++ b/OpenSim/Region/OptionalModules/World/NPC/NPCAvatar.cs
@@ -610,6 +610,8 @@ namespace OpenSim.Region.OptionalModules.World.NPC
             return new Dictionary<UUID, ulong>();
         }
 
+        public void SetGroupPowers(Dictionary<UUID, ulong> powers) { }
+
         public ulong GetGroupPowers(UUID groupID)
         {
             return 0;
diff --git a/OpenSim/Tests/Common/Mock/TestClient.cs b/OpenSim/Tests/Common/Mock/TestClient.cs
index 83328c8c29..4f8e986771 100644
--- a/OpenSim/Tests/Common/Mock/TestClient.cs
+++ b/OpenSim/Tests/Common/Mock/TestClient.cs
@@ -429,6 +429,8 @@ namespace OpenSim.Tests.Common
             return new Dictionary<UUID, ulong>();
         }
 
+        public void SetGroupPowers(Dictionary<UUID, ulong> powers) { }
+
         public ulong GetGroupPowers(UUID groupID)
         {
             return 0;