Here is the problematic source code, I forgot it in my orginal message:

camera{location <10,10,-10> look_at <0,0,0>}
background{rgb 1}

light_source{<0,10,-10>, rgb 1
area_light 4,4,6,6
circular orient jitter}

isosurface {
    function {sqrt((x*y)^2+(y*z)^2+(z*x)^2-3)}
    max_gradient 36
    accuracy 0.01
    contained_by { sphere {<0,0,0>,6} }

     pigment {
  bozo
  scale 0.5
  color_map {
   [0.0 rgb <1,0,0>]
   [1.0 rgb <0,0,1>]
  }
 }
}

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