Running on 64 bit Windows with 8 GB RAM
Version: v1.10.9 (Stable)9/19/2019 10:15:14 PM: Critical error occurred
System.NullReferenceException: Object reference not set to an instance of an object.
   at Vintagestory.Common.ObjectPhysics.loadBlock(BlockPos pos)
   at Vintagestory.Common.ObjectPhysics.UpdateVelocity(Vec3d pos, Vec3f velocity, IWorldAccessor world, Boolean boyant, Single gravityStrength, Single deltatime, Single height)
   at Vintagestory.Client.NoObf.ParticleFlying.update(Single deltatime, _YDtJeu0ckJy3BQKGP40jKR9VBBQ game, Boolean isThirdTick, Single relLife)
   at Vintagestory.Client.NoObf.ParticlePoolQuads.OnNewFrame(Single dt, Vec3d cameraPos)
   at Vintagestory.Client.NoObf.SystemRenderParticles.Render(ParticlePool pool, Single dt)
   at Vintagestory.Client.NoObf.SystemRenderParticles.OnRenderFrame3DOIT(Single deltaTime)
   at _MGzGdB3whGnjUzyRj55DLdCiHQd._I7EAZB0yX09nO8LIPaNKNdnUgJg(EnumRenderStage , Single )
   at _YDtJeu0ckJy3BQKGP40jKR9VBBQ._I7EAZB0yX09nO8LIPaNKNdnUgJg(EnumRenderStage , Single )
   at _YDtJeu0ckJy3BQKGP40jKR9VBBQ._CFZhue1PlQrhtm8XDVFCBDscTTC(Single )
   at _YDtJeu0ckJy3BQKGP40jKR9VBBQ._SkuGRS1bonx3Z7HGSaWuwMy1oki(Single )
   at _PcDMfChWYxJCZav10uafDEANdTC._BljYcw7JNXIZRNBBFIkxxdRaoHq(Single )
   at _FiJkqxZ90Buq6bWu3DbzzyOvo7A._fUOJZ7DUseUXGNpwtgU1i9PeAC(Single )
   at _FiJkqxZ90Buq6bWu3DbzzyOvo7A._s2SyIIvigGJAkHuz1MgU0H3TMEg(Single )
   at _y5wDfp0XeaqbZXPCoVIaVTWXt6S._i3iYGhJc7Gg8QwM22t57JVdZ46k(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 _S9teWxRnV3WhxodJXh2IjBkzCzc._EshALnbhDo37bJRDji8WBKkG2WL(_vCJbcm7nNO8xmG8NWbO7agG80mp , String[] )
   at _Q8zkymMDiUiKGiVtdPJbwJ77AJs._EshALnbhDo37bJRDji8WBKkG2WL(ThreadStart )
-------------------------------

Event Log, last 3 entries
==================================
{ TimeGenerated = 9/15/2019 7:54:26 PM, 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 000007FEFD29BDED
Stack:
   at System.Environment._Exit(Int32)
   at System.Environment._Exit(Int32)
   at System.Environment.Exit(Int32)
   at _ud9KxuaSECLcZYoyGyTJRwKRgLi._8xgUBsRvWv68md4bXICCKfXNnDG()
   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 _Cq0SexGFIMFjHiathh2t5UId0ab._oZfFWJQFzZ0yMD1EbB0N3WRb2LN(Vintagestory.API.Client.MouseEvent)
   at _zALkvO6uMzGwG0FZWTuzgmDmNRf._ofStaXyoo4vSUGFDh9HLbVDMJYi(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 _EzYbY8XqDBpHTSntlGLRo1yyxG8._XiLrCitjPfhBs0UfoaQ5onoUxz5(_tgdBQ99mXDSNgCdsj3xYCQHkaYD, System.String[])
   at _LtZ3lNX4BW7l2WIPILwb1wFLLmj._XiLrCitjPfhBs0UfoaQ5onoUxz5(System.Threading.ThreadStart)
   at _EzYbY8XqDBpHTSntlGLRo1yyxG8._vHJc7ly1O5aWgHAKAmV8WEHUIeD(System.String[])
 }
{ TimeGenerated = 5/16/2019 10:07:20 PM, 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.ArgumentNullException
   at Newtonsoft.Json.Linq.JObject.get_Item(System.Object)
   at Vintagestory.API.JsonObject.get_Item(System.String)
   at Vintagestory.GameContent.BlockGenericTypedContainer.GetHeldItemInfo(Vintagestory.API.Common.ItemStack, System.Text.StringBuilder, Vintagestory.API.Common.IWorldAccessor, Boolean)
   at Vintagestory.API.Common.ItemStack.GetDescription(Vintagestory.API.Common.IWorldAccessor, Boolean)
   at Vintagestory.API.Client.GuiElementItemstackInfo.Recompose()
   at Vintagestory.API.Client.GuiElementItemstackInfo.SetSourceSlot(Vintagestory.API.Common.ItemSlot)
   at Vintagestory.API.Client.ItemstackComponentBase.RenderItemstackTooltip(Vintagestory.API.Common.ItemStack, Double, Double, Single)
   at Vintagestory.API.Client.SlideshowItemstackTextComponent.RenderInteractiveElements(Single, Double, Double)
   at Vintagestory.API.Client.GuiElementRichtext.RenderInteractiveElements(Single)
   at Vintagestory.API.Client.GuiComposer.Render(Single)
   at Vintagestory.API.Client.GuiDialog.OnRenderGUI(Single)
   at _YrPLgRNoKqLkIJjZXGQBQZfF0ss._6WZTNVfTa7rWSKqb82sMCqgCFyP(Single)
   at _GUwD6VYkgVQ73AlLfKTdTWGrvUH._NqNCafwIuVnrN0APAIQT44l6CVR(Vintagestory.API.Client.EnumRenderStage, Single)
   at _PndAABz6mbLrIVY3bGkjFENAKYE._NqNCafwIuVnrN0APAIQT44l6CVR(Vintagestory.API.Client.EnumRenderStage, Single)
   at _PndAABz6mbLrIVY3bGkjFENAKYE._8Q0lcHKBmMsrZdVz5CTBHXVZQIW(Single)
   at _NkoWRZbO8vbo2P0bHOmeWW5HFZm._8Q0lcHKBmMsrZdVz5CTBHXVZQIW(Single)
   at _ClwmnLe1V7vR8n56XkbHz2NmshG._v6KGki9QaYXffAVL8MxroiYvLHZ(Single)
   at _ClwmnLe1V7vR8n56XkbHz2NmshG._bWLdqbxl84dj0WzW4hexmUSwPWP(Single)
   at _mEhEzZ8DmIQe7K9d4tBswO1fhgX._0oOO2PQajHpBpSzMJCyLMiw7tG(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 _3vfvgrHj6ymQxm8FJtx4Ruzypih._Z3lNUjeecYm8PMLFsAqAg3ack5w(_mmIyrGEQIkHEG3raFL54FrKNncQ, System.String[])
   at _VPmpDmTQc9Jyy6X2oS97VHCLE8A._Z3lNUjeecYm8PMLFsAqAg3ack5w(System.Threading.ThreadStart)

 }