1 files changed, 4 insertions, 1 deletions

diff --git a/OpenSim/Region/CoreModules/World/Objects/BuySell/BuySellModule.cs b/OpenSim/Region/CoreModules/World/Objects/BuySell/BuySellModule.cs
index 62abd4c..8ce6daf 100644
--- a/OpenSim/Region/CoreModules/World/Objects/BuySell/BuySellModule.cs
+++ b/OpenSim/Region/CoreModules/World/Objects/BuySell/BuySellModule.cs
@@ -128,7 +128,10 @@ namespace OpenSim.Region.CoreModules.World.Objects.BuySell
                 group.SetOwnerId(remoteClient.AgentId);
                 group.SetRootPartOwner(part, remoteClient.AgentId, remoteClient.ActiveGroupId);
 
-                List<SceneObjectPart> partList = new List<SceneObjectPart>(group.Children.Values);
+                List<SceneObjectPart> partList = null;
+                
+                lock (group.Children)
+                    partList = new List<SceneObjectPart>(group.Children.Values);
 
                 if (m_scene.Permissions.PropagatePermissions())
                 {