Check out my reply in p.b.s-f. It seems to work, although I'm not entirely sure
why the original doesn't.
The main change is duplication of the parameter block (see source), but I
tweaked a few other things also.
--
Margus Ramst
Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg
edu