Are these BB's original light sets he published with his original VSSProp?  If so, those light sets are much hotter than they were intended to run.  This means light level intensities must be turned down considerably.  My recommendation would be to create your own lights, 1 infinite, 1 IBL each with RGB diffuse color 255, 255, 255.  Infinite light, 75% intensity, raytrace shadows;
IBL 10 - 15% variable with AO activated, default settings.  Try that combination first, then make adjustments as needed.