Am 23.02.2016 um 15:07 schrieb ThH:

> //--------------------------------------------
> // Bottom
> //--------------------------------------------
> #declare HalfSubBottom=union{
>           difference{
>                  object{Part1} // bottom front
>                  plane{y,0 inverse}
>                  plane{z,0 inverse}
>                  plane{x,0 inverse}
>                  scale <SX,SYbot,SZfront>
>          }
>          difference{
>                  object{Part3} // bottom rear
>                  plane{y,0 inverse}
>                  plane{z,0}
>                  plane{x,0 inverse}
>                  scale <SX,SYbot,SZrear>
>          }
> }

Additional information: Comment out the first difference and the error 
is gone ;)

Again... Hope this helps :)

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