[Radiance-general] Can't get gensky to work without sun...

[Lars O. Grobe]

By the way... is the warning not somehow obsolete and misleading in 
times, where a lot of tools of the Radiance toolkit rely on scenes 
including no light-type objects? I think I would prefer to have the 
warning removed, as it may be more irritating then helpful these days. 
If there was a simple way to check whether a scene contains neither 
light nor glow object, that would be useful - but probably not that easy 
to detect.

Cheers, Lars.