Running on 64 bit Windows with 16 GB RAM 
Version: v1.14.5 (Stable)1/10/2021 4:19:23 PM: Critical error occurred
System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
   at System.ThrowHelper.ThrowKeyNotFoundException()
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at Vintagestory.GameContent.GuiDialogRenameTeleport.get_Data()
   at Vintagestory.GameContent.GuiDialogRenameTeleport..ctor(String DialogTitle, BlockPos blockEntityPos, ICoreClientAPI capi, CairoFont font)
   at TeleportationNetwork.BlockEntityTeleport.OnShiftRightClick()
   at TeleportationNetwork.BlockTeleport.OnBlockInteractStart(IWorldAccessor world, IPlayer byPlayer, BlockSelection blockSel)
   at Vintagestory.Client.NoObf.SystemMouseInWorldInteractions.TryBeginUseBlock(Block selectedBlock, BlockSelection blockSelection)
   at Vintagestory.Client.NoObf.SystemMouseInWorldInteractions.HandleMouseInteractionsBlockSelected(Single dt)
   at Vintagestory.Client.NoObf.SystemMouseInWorldInteractions.OnFinalizeFrame(Single dt)
   at Vintagestory.Client.NoObf.ClientEventManager.TriggerRenderStage(EnumRenderStage stage, Single dt)
   at Vintagestory.Client.NoObf.ClientMain.TriggerRenderStage(EnumRenderStage stage, Single dt)
   at Vintagestory.Client.NoObf.ClientMain.RenderToDefaultFramebuffer(Single dt)
   at _Vq7Xo4xIdbZDwh8iDcGnovGKH7D._df3GxtG5OOiD7YZvbaraCiLbckx(Single )
   at _7KGTxxuvfNubJZCLAMEMJZBkPDeA._07k4LSTgxALpYbS1S6K07SItFcH(Single )
   at _7KGTxxuvfNubJZCLAMEMJZBkPDeA._aysJzMcCvicDqo8MC3TmjcDsfdZ(Single )
   at Vintagestory.Client.NoObf.ClientPlatformWindows.window_RenderFrame(Object sender, FrameEventArgs e)
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at OpenTK.GameWindow.RaiseRenderFrame(Double elapsed, Double& timestamp)
   at OpenTK.GameWindow.DispatchRenderFrame()
   at OpenTK.GameWindow.Run(Double updates_per_second, Double frames_per_second)
   at _4eRDDOqtbaPbgjN2dJ1zzD1FCRy._ExJp6VhLWG4xQoHsVn72tgyNbeG(_bWl72q5sGuTQypu8W8r7cRXUcRF , String[] )
   at _XKAWv6MyciUiZmECUonQCwPaCwE._ExJp6VhLWG4xQoHsVn72tgyNbeG(ThreadStart )