A wild guess.
You used an older light setup, and then checked IDL to ON.

IDL "adds" the Indirect Diffused Light to your scene, so automatically, you have overexposure and you have to reduce the direct light settings.( Or reduce the number of lights ) .
There is only ONE sun out there.

Also check for, and remove, ambient in your shader setup. Some old style texture and material setups come with ambient on the skin.
This is a NO-NO for human skin in the most recent Poser render versions when rendering with IDL+GC.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!