Hi Zeger,

I am also getting errors, and I use the updated version you posted as 
response of Doctor John's and Rarius' problems.

Here is the error message:

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Preset INI file is 'D:\PROGRAMME\POV-RAY FOR WINDOWS\RENDERER\QUICKRES.INI', 
section is '[800x600, AA 0.3]'.
Preset source file is 'D:\Programme\POV-Ray for Windows\Scenes\Other 
Authors\Greebles\greebletest.pov'.
Rendering with 4 threads.
Parser Options
  Input file: D:\Programme\POV-Ray for Windows\Scenes\Other 
Authors\Greebles\greebletest.pov
  Remove bounds........On
  Split unions.........Off
  Library paths:
    D:\Programme\POV-Ray for Windows\Include
    E:\Scripts\Eigene Bilder\Povray Textures
    C:\WINDOWS\Fonts
    D:\PROGRAMME\POV-RAY FOR WINDOWS\include
    C:\WINDOWS\Fonts
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
Possible Parse Error: Singular matrix in MInvers.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 520: Parse 
Warning: Patch objects not allowed in intersection.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 521: Parse 
Warning: Should have at least 2 objects in csg.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: Parse 
Warning: Polygon not closed. Closing it.
File 'D:\Programme\POV-Ray for Windows\Include\greebles.inc' line 75: 
Possible Parse Error: Singular matrix in MInvers.
Fatal error in parser: Uncategorized error.
Render failed
-
CPU time used: kernel 0.58 seconds, user 0.16 seconds, total 0.73 seconds.
Elapsed time 0.86 seconds.
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