Unhandled Exception: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
  at System.Collections.Generic.Dictionary`2[System.String,libsecondlife.LLUUID].get_Item (System.String ) [0x00000] 
  at OpenSim.Region.Environment.Scenes.ScenePresence..ctor (IClientAPI client, OpenSim.Region.Environment.Scenes.Scene world, OpenSim.Framework.RegionInfo reginfo) [0x00000] 
  at OpenSim.Region.Environment.Scenes.ScenePresence..ctor (IClientAPI client, OpenSim.Region.Environment.Scenes.Scene world, OpenSim.Framework.RegionInfo reginfo, OpenSim.Region.Environment.Scenes.AvatarAppearance appearance) [0x00000] 
  at OpenSim.Region.Environment.Scenes.InnerScene.CreateAndAddScenePresence (IClientAPI client, Boolean child, OpenSim.Region.Environment.Scenes.AvatarAppearance appearance) [0x00000] 
  at OpenSim.Region.Environment.Scenes.Scene.CreateAndAddScenePresence (IClientAPI client, Boolean child) [0x00000] 
  at OpenSim.Region.Environment.Scenes.Scene.AddNewClient (IClientAPI client, Boolean child) [0x00000] 
  at OpenSim.Region.ClientStack.ClientView.InitNewClient () [0x00000] 
  at OpenSim.Region.ClientStack.ClientView.AuthUser () [0x00000] 
  at (wrapper delegate-invoke) System.MulticastDelegate:invoke_void ()