Cricus

Hi, there's a chance future updates will add other attributes, likes bad ones.

Just why.........

Hi, recently i had a problem with my world related to the xskill mod. Put in less words, my problem was that any item enters in the crafting grid, once dropped, disappears or generally disappears in the inventory or goes back to before I interacted with it. Trying not to lose a 70 hours world, I tried to re-download the mod, use an old version, trying to find conflicts with other mods but it turned out to be useless, even the backups of this world was crashed.

• I tried to trade with a merchant.

Running on 64 bit Windows with 8 GB RAM 
Version: 1.8.6 Survival Mode Edition (Stable)03/02/2019 18:19:26: Critical error occurred
System.NullReferenceException: Riferimento a un oggetto non impostato su un'istanza di oggetto.
   in Vintagestory.GameContent.InventoryTrader.ActivateSlot(Int32 slotId, IItemSlot mouseSlot, ItemStackMoveOperation& op)
   in Vintagestory.API.Client.GuiElementItemSlotGridBase.SlotClick(ICoreClientAPI api, Int32 slotId, EnumMouseButton mouseButton, Boolean shiftPressed, Boolean ctrlPressed, Boolean altPressed)
   in Vintagestory.API.Client.GuiElementItemSlotGridBase.OnMouseDownOnElement(ICoreClientAPI api, MouseEvent args)
   in Vintagestory.API.Client.GuiElement.OnMouseDown(ICoreClientAPI api, MouseEvent mouse)
   in Vintagestory.API.Client.GuiComposer.OnMouseDown(MouseEvent mouse)
   in Vintagestory.API.Client.GuiDialog.OnMouseDown(MouseEvent args)
   in _BwVgdqlQku0IqST4I67YlKnH16H._IeFmBFJNhRYXZGKLcceEjHCmLsE(MouseEvent )
   in _K2fmDt3LahlWXEj6Esz0AJJFmNp._IeFmBFJNhRYXZGKLcceEjHCmLsE(MouseEvent )
   in _wshbe4W5vWkCJQpgFYaAfJQGYfjb._enhX2B2ys9L6RSh6H7h1gefZmwc(Object , MouseButtonEventArgs )
   in System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   in System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   in OpenTK.Platform.Windows.WinGLNative.WindowProcedure(IntPtr handle, WindowMessage message, IntPtr wParam, IntPtr lParam)
   in OpenTK.Platform.Windows.Functions.DispatchMessage(MSG& msg)
   in OpenTK.Platform.Windows.WinGLNative.ProcessEvents()
   in OpenTK.GameWindow.Run(Double updates_per_second, Double frames_per_second)
   in _7RbFPYmEauEtblHF8XhRgqgNTbT._Bq6cNCFb7UUjYLmEki8Fg1xITYu(_cP5Vo8cijahhBKUlfh9aHwWB989 , String[] )
   in _E1oVgwngz1oPDa0IuTZ50QFzLQd._Bq6cNCFb7UUjYLmEki8Fg1xITYu(ThreadStart )
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