Yes, exactly that I found out. The error was caused just in the trace 
function. And because it is flexible with the amount of parameters. That 
was, what broke my neck!

:-)

Sven


"Warp" <war### [at] tagpovrayorg> schrieb im Newsbeitrag 
news:446db9ae@news.povray.org...
>  You shouldn't remove commas because sometimes they are crucial.
>  "a -b" is *not* the same thing as "a, -b".

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