I haven't applied any displacement maps. I did add a bump of 0.01 to the skin but it made no difference. I'm not sure of the difference between the Occlusion Master settings on Victoria's skin vs. the settings on the light itself (I've just got one IBL light with AO turned on, and those are the settings I've been fiddling with). Are the light settings meant to be the same as the Occlusion Master settings? Also, when I ran your OM wacro, then checked the Render Settings, raytracing wasn't turned on... it was still set at the default draft setting. Did I miss something? I just rendered with raytracing turned off and the spots are gone.