try another way

OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs

@@ -12700,6 +12700,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         private bool HandleUseCircuitCode(IClientAPI sender, Packet Pack)
         {
+            /*
             UseCircuitCodePacket uccp = (UseCircuitCodePacket)Pack;
             if(uccp.CircuitCode.ID == m_agentId &&
                 uccp.CircuitCode.SessionID == m_sessionId &&
@@ -12708,8 +12709,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                !((ScenePresence)SceneAgent).IsDeleted
             )
                 SendRegionHandshake(); // possible someone returning
-
+            */
             return true;
+
         }
 
         private bool HandleCreateNewOutfitAttachments(IClientAPI sender, Packet Pack)

OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs

@@ -1725,7 +1725,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                     if (client != null)
                     {
-                        client.SendRegionHandshake();
+                        if(aCircuit.teleportFlags <= 0)
+                            client.SendRegionHandshake();
                         client.CheckViewerCaps();
                     }
                 }

OpenSim/Region/Framework/Scenes/ScenePresence.cs

@@ -2179,6 +2179,7 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                 }
                 // Tell the client that we're totally ready
+                ControllingClient.SendRegionHandshake();
                 ControllingClient.MoveAgentIntoRegion(m_scene.RegionInfo, AbsolutePosition, look);
                 //m_log.DebugFormat("[CompleteMovement] MoveAgentIntoRegion: {0}ms", Util.EnvironmentTickCountSubtract(ts));