Error mechanical Power

[Cricus]

Running on 64 bit Windows with 8 GB RAM 
Version: 1.8.6 Survival Mode Edition (Stable)06/03/2019 15:53:52: Critical error occurred
System.NullReferenceException: Riferimento a un oggetto non impostato su un'istanza di oggetto.
   in Vintagestory.GameContent.Mechanics.BlockWindmillRotor.TryPlaceBlock(IWorldAccessor world, IPlayer byPlayer, ItemStack itemstack, BlockSelection blockSel)
   in _K2fmDt3LahlWXEj6Esz0AJJFmNp._FVV6TLtFbL51ACDFj5fSg5drO1p(BlockSelection )
   in _nMC4aA7Wi7OBKYjJRNpjyldeJPo._aXOXqkHIjpp5ro9V62UjmrBECge(BlockSelection , Block )
   in _nMC4aA7Wi7OBKYjJRNpjyldeJPo._D2eWbXUCqpvRfMA7ElF8olZuSHe(Single )
   in _nMC4aA7Wi7OBKYjJRNpjyldeJPo._yCfXhLj9ADMgaHRvlwn75lUVfie(Single )
   in _MrklTihOKPbcVZ346gJmH39UZUH._Yk7Dv1H1VJNpa6qcgjCMd4B8fLNA(EnumRenderStage , Single )
   in _K2fmDt3LahlWXEj6Esz0AJJFmNp._Yk7Dv1H1VJNpa6qcgjCMd4B8fLNA(EnumRenderStage , Single )
   in _K2fmDt3LahlWXEj6Esz0AJJFmNp._xUgShaj3EGJw6bxByvAjBAOsrTm(Single )
   in _JA2o2qCdbxRRuKLcj0ed5GERaOW._xUgShaj3EGJw6bxByvAjBAOsrTm(Single )
   in _XbwW92DfPLMirecI3G0ZC0SbIlI._bM3q3B2uYU871QxTRlooiqKeKCh(Single )
   in _XbwW92DfPLMirecI3G0ZC0SbIlI._gELHdT9iJuSCK3WN5DcuoAMhk1R(Single )
   in _wshbe4W5vWkCJQpgFYaAfJQGYfjb._8fyrbxfxgthLgctCPbPxZBeE7lC(Object , FrameEventArgs )
   in System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   in OpenTK.GameWindow.RaiseRenderFrame(Double elapsed, Double& timestamp)
   in OpenTK.GameWindow.DispatchRenderFrame()
   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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This happen when i try to place the rotor windmill for build  mechanical power 

[Tyron]

Oh thanks for the info, but this has already been reported and fixed for version 1.9

[Cricus]

ahh ok thanks but in the 1.9 the machanical power it can be used?

 

[redram]

Not in-game.  1.9 is the world update.