Crash interacting with plank piles

[Jameh]

Running on 64 bit Windows with 32 GB RAM 
Version: v1.11.11 (Stable)23/12/2019 12:37:58: Critical error occurred
System.NullReferenceException: Object reference not set to an instance of an object.
   at Vintagestory.GameContent.BlockPlankPile.<>c__DisplayClass12_0.<GetPlacedBlockInteractionHelp>b__0(WorldInteraction wi, BlockSelection bs, EntitySelection es)
   at Vintagestory.Client.NoObf.DrawWorldInteractionUtil.ComposeBlockWorldInteractionHelp(WorldInteraction[] wis)
   at Vintagestory.Client.NoObf.HudElementBlockInteractionHelp.OnBlockChanged(BlockPos pos, Block oldBlock)
   at Vintagestory.API.Client.BlockChangedDelegate.Invoke(BlockPos pos, Block oldBlock)
   at _VDsWgzK30VQbGsNO9IbfdQ0yn0l._CSCcAjBc3sOfoCanzoEAKLj4WEAA(_NG0ZnXmTtmPezIn9LSDyNwn1qcA , BlockPos , Block )
   at Vintagestory.Client.NoObf.GeneralPacketHandler.HandleSetBlock(_C2a5w96IPIoaGnuBib4ah0PXM1k packet)
   at _NG0ZnXmTtmPezIn9LSDyNwn1qcA._ncGNLsXAvzhYrBzvpc814zz0oUP(Single )
   at _UugBRzab4cvS4gP9FU16U1nCEkv._FSwYayGiaiyft0co3hAAEsCvntwA(Single )
   at _EV8yMnhtAV8IVAlRniUfLnu7sZp._maGDsIZvsWOnOdmbpKZafq8JKxcA(Single )
   at _EV8yMnhtAV8IVAlRniUfLnu7sZp._ryTdv9qG5dhCjbW6tjKjdNvxYhY(Single )
   at _k603ozcgxEWfTany0f4BuFkKaTO._cofRcWkjdUpiHnZj5DznYMVdHcb(Object , FrameEventArgs )
   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 _KhnygRKbChlhNVZ6NoTIj4AppFv._CZt1ULfHsOfvWyybAWFzfZAPlmN(_v0QfrgDod6R3FrQXNUcbGgdKeRI , String[] )
   at _Vfez4jOq8l9qPflsxomPO9fBnuB._CZt1ULfHsOfvWyybAWFzfZAPlmN(ThreadStart )
-------------------------------

Event Log, last 3 entries
==================================
{ TimeGenerated = 05/12/2019 21:31:24, Site = , Source = .NET Runtime, Message = Application: Vintagestory.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NullReferenceException
   at Vintagestory.GameContent.BlockPlatePile+<>c__DisplayClass12_0.<GetPlacedBlockInteractionHelp>b__0(Vintagestory.API.Client.WorldInteraction, Vintagestory.API.Common.BlockSelection, Vintagestory.API.Common.EntitySelection)
   at Vintagestory.Client.NoObf.DrawWorldInteractionUtil.ComposeBlockWorldInteractionHelp(Vintagestory.API.Client.WorldInteraction[])
   at Vintagestory.Client.NoObf.HudElementBlockInteractionHelp.BlockInView()
   at Vintagestory.Common.EventManager.TriggerGameTick(Int64, Vintagestory.API.Common.IWorldAccessor)
   at _tgzoykAbNqsdtRyrOFdc8I7Ow7g._fbEJ48tJJSnFzCYn0bGwHCbqtFd(Single)
   at _tgzoykAbNqsdtRyrOFdc8I7Ow7g._x9nzI3t2hGta5X8nO3ZBBT4DZ8J(Single)
   at _zrdtg4UCazZzkLOdRNn1pI1ZRFd._qKtxoabCoaQo5Eyrftl36g7vDKk(Single)
   at _gs2N2q7HaCSPXnjZerb7vtFtirG._CGHehKw5n1iw0DtMo3jrgpBJKSe(Single)
   at _gs2N2q7HaCSPXnjZerb7vtFtirG._F7IG8Z5238DzhCEAGbpksIYGOYH(Single)
   at _91tbFwDBlPrdXCsJ1qOjfR3nlre._ALrpPjf5jznyJlp78SL0ZEpfCfG(System.Object, OpenTK.FrameEventArgs)
   at System.EventHandler`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Invoke(System.Object, System.__Canon)
   at OpenTK.GameWindow.RaiseRenderFrame(Double, Double ByRef)
   at OpenTK.GameWindow.DispatchRenderFrame()
   at OpenTK.GameWindow.Run(Double, Double)
   at _8LcWAu0y4fFQAmY4SxfbiwjmEme._8uu87p3vS1B4MfhyVLmiXryz9lB(_BVXL5qcBHoeJMMLIkOQPAiaGcffb, System.String[])
   at _tJpO366PdbyjWv4bIyXxOMR8QUq._8uu87p3vS1B4MfhyVLmiXryz9lB(System.Threading.ThreadStart)

 }
{ TimeGenerated = 05/12/2019 16:14:21, Site = , Source = .NET Runtime, Message = Application: Vintagestory.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: exception code c0020001, exception address 00007FFD345FA839
Stack:
   at System.Environment._Exit(Int32)
   at System.Environment._Exit(Int32)
   at System.Environment.Exit(Int32)
   at _I5k7PFL0Qprans7MpIc05ZOJMtp._IN7AOL4aEQ5ZvGEhw6tZJQY37tN()
   at Vintagestory.API.Client.GuiElementTextButton.OnMouseUpOnElement(Vintagestory.API.Client.ICoreClientAPI, Vintagestory.API.Client.MouseEvent)
   at Vintagestory.API.Client.GuiElement.OnMouseUp(Vintagestory.API.Client.ICoreClientAPI, Vintagestory.API.Client.MouseEvent)
   at Vintagestory.API.Client.GuiElementTextButton.OnMouseUp(Vintagestory.API.Client.ICoreClientAPI, Vintagestory.API.Client.MouseEvent)
   at Vintagestory.API.Client.GuiComposer.OnMouseUp(Vintagestory.API.Client.MouseEvent)
   at _oCXYuEPowqvbf4XpmQIrorQwrLN._WgVHUqgbpp9fX2a1xxYB1rV4ChE(Vintagestory.API.Client.MouseEvent)
   at _91tbFwDBlPrdXCsJ1qOjfR3nlre._S98tyeKLR9JM6dowlt6od0BNuuh(System.Object, OpenTK.Input.MouseButtonEventArgs)
   at System.EventHandler`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Invoke(System.Object, System.__Canon)
   at System.EventHandler`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Invoke(System.Object, System.__Canon)
   at OpenTK.Platform.Windows.WinGLNative.WindowProcedure(IntPtr, OpenTK.Platform.Windows.WindowMessage, IntPtr, IntPtr)
   at OpenTK.Platform.Windows.Functions.DispatchMessage(OpenTK.Platform.Windows.MSG ByRef)
   at OpenTK.Platform.Windows.Functions.DispatchMessage(OpenTK.Platform.Windows.MSG ByRef)
   at OpenTK.Platform.Windows.WinGLNative.ProcessEvents()
   at OpenTK.GameWindow.Run(Double, Double)
   at _8LcWAu0y4fFQAmY4SxfbiwjmEme._8uu87p3vS1B4MfhyVLmiXryz9lB(_BVXL5qcBHoeJMMLIkOQPAiaGcffb, System.String[])
   at _tJpO366PdbyjWv4bIyXxOMR8QUq._8uu87p3vS1B4MfhyVLmiXryz9lB(System.Threading.ThreadStart)
   at _8LcWAu0y4fFQAmY4SxfbiwjmEme._N6abj0K0fdWJJEuq39x3phF4ZN6(System.String[])
 }
{ TimeGenerated = 23/10/2019 09:59:45, Site = , Source = .NET Runtime, Message = Application: Vintagestory.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: exception code c0020001, exception address 00007FFA0932A839
Stack:
   at System.Environment._Exit(Int32)
   at System.Environment._Exit(Int32)
   at System.Environment.Exit(Int32)
   at System.EventHandler`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Invoke(System.Object, System.__Canon)
   at OpenTK.NativeWindow.OnClosedInternal(System.Object, System.EventArgs)
   at System.EventHandler`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Invoke(System.Object, System.__Canon)
   at OpenTK.Platform.Windows.WinGLNative.HandleDestroy(IntPtr, OpenTK.Platform.Windows.WindowMessage, IntPtr, IntPtr)
   at OpenTK.Platform.Windows.WinGLNative.WindowProcedure(IntPtr, OpenTK.Platform.Windows.WindowMessage, IntPtr, IntPtr)
   at OpenTK.Platform.Windows.Functions.DestroyWindow(IntPtr)
   at OpenTK.Platform.Windows.Functions.DestroyWindow(IntPtr)
   at OpenTK.Platform.Windows.WinGLNative.DestroyWindow()
   at OpenTK.Platform.Windows.WinGLNative.WindowProcedure(IntPtr, OpenTK.Platform.Windows.WindowMessage, IntPtr, IntPtr)
   at OpenTK.Platform.Windows.Functions.DefWindowProc(IntPtr, OpenTK.Platform.Windows.WindowMessage, IntPtr, IntPtr)
   at OpenTK.Platform.Windows.Functions.DefWindowProc(IntPtr, OpenTK.Platform.Windows.WindowMessage, IntPtr, IntPtr)
   at OpenTK.Platform.Windows.WinGLNative.WindowProcedure(IntPtr, OpenTK.Platform.Windows.WindowMessage, IntPtr, IntPtr)
   at OpenTK.Platform.Windows.Functions.PeekMessage(OpenTK.Platform.Windows.MSG ByRef, IntPtr, Int32, Int32, OpenTK.Platform.Windows.PeekMessageFlags)
   at OpenTK.Platform.Windows.Functions.PeekMessage(OpenTK.Platform.Windows.MSG ByRef, IntPtr, Int32, Int32, OpenTK.Platform.Windows.PeekMessageFlags)
   at OpenTK.Platform.Windows.WinGLNative.ProcessEvents()
   at OpenTK.GameWindow.Run(Double, Double)
   at _jFSRJNH2UoVV5aoV1kk3b42xPad._e1EbMRpqt8RufEJ9cdmSNOo0dAi(_S3iAQfXuHBtwDjmzKaQZbvHmigS, System.String[])
   at _yHBVJoDdYO0bfLKyeTTl6TWBFSfA._e1EbMRpqt8RufEJ9cdmSNOo0dAi(System.Threading.ThreadStart)
   at _jFSRJNH2UoVV5aoV1kk3b42xPad._MxRmcgyjj7BuKoHY8zlAUfJiEI7(System.String[])
 }

On Windows 10, running VSHUD mod on multiplayer server. Had the crash a couple times in a row, once when taking planks from a stack, once when placing them onto the stack.

[Tyron]

Thanks for the report, this is now fixed for the next version