Have a look at the Scene Help section 5.1.2 Using INI Files, last paragraph.
Since this isn't specific to Windows and meant for cross platform
compatibility spaces aren't allowed on the command line.

bob h

"Jutta Wait" <JWA### [at] insightrrcom> wrote in message
news:3c38cd6f@news.povray.org...
> If the name of an INI file passed to POVRay on the Windows command line
> contains spaces (typically in the directory part of the name), a space is
> always taken as a token delimiter, even if the name is enclosed in quotes.
> I have only had the '~' form of the file name be successful in these
cases.

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