Hello,

This simple scene render correctly, without any warning message or 
error, with official povray and UVpov6.2 but with MegaPov0.2 
(for windows) I have this error:

> Copyright 1999 POV-Ray Team(tm)
> This is an UNSUPPORTED UNOFFICIAL COMPILE by Nathan Kopp (email: Nat### [at] Koppcom).
> Parsing Options
>   Input file: C:\AAAAPhys\Untitled.pov (compatible to version 3.14159)
>   Remove bounds........On  Split unions........Off
>   Library paths: C:\Utilitaires\POVRay\INCLUDE
> Output Options
>   Image resolution 640 by 480 (rows 1 to 480, columns 1 to 640).
>   Output file: Untitled.bmp, 24 bpp (system format)
>   Graphic display......On  (type: 0, palette: 3, gamma:  2.2)
>   Mosaic preview......Off
>   Continued trace.....Off  Allow interruption..Off  Pause when done.....Off
>   Verbose messages.....On
> Tracing Options
>   Quality:  9
>   Bounding boxes.......On  Bounding threshold: 3 
>   Light Buffer.........On  Vista Buffer.........On  Draw Vista Buffer...Off
>   Antialiasing.........On  (Method 1, Threshold 0.300, Depth 3, Jitter 1.00)
>   Radiosity...........Off
> Animation Options
>   Clock value....   0.000  (Animation off)
> Redirecting Options
>   All Streams to console..........On
>   Debug Stream to console.........On
>   Fatal Stream to console.........On
>   Render Stream to console........On
>   Statistics Stream to console....On
>   Warning Stream to console.......On
>   #declare pig=yes;
>   #if (pig)
>     pigment { bozo color_map{
>                      // s is delta for the contour lines
>                      #declare s <----ERROR
> 
> C:\AAAAPhys\Untitled.pov:9: error: undeclared identifier expected but s found
instead.
> 
> 
> Returned from renderer (non-zero return value)
> 

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Here is the code:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


plane{
  z,0
  texture
  {
  #declare pig=yes;
  #if (pig)
    pigment { bozo color_map{
                     // s is delta for the contour lines
                     #declare s=.05;
                     #declare a=0;
                     #while(a<=1)
                       [a rgb 1]
                       [a+s/4 rgb 1]
                       [a+s/4 rgb .5]
                       [a+s/4*2 rgb .5]
                       [a+s/4*2 rgb 1]
                       #declare a=a+s;
                     #end
                     }
               scale 1}
    finish { specular 1 }
  #else
    pigment { color rgb 1 }
    finish { specular 1 }
  #end
    normal { bozo 0.5*5
             slope_map{[0 <0,0>][1 <1,0>]}
             scale 1 }
  }
}

light_source { <500,0,-100> color rgb 1 }
// light_source { <0,500,-100> color rgb 1 }

camera
{
  location  <0.0 , 0.0 ,-2.25>*2
  up y
  right x
  look_at   <0.0 , 0.0 , 0.0>
  orthographic
}

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
If a replace s by ss all is ok!

Fabian.

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