Candide, check out the reflection of the cylindrical base at the bottom of the sphere.

I don't have access to the octane thread since I'm not a customer, but I definitely got the impression that Radiance had some walls up when presented with this issue in the earlier thread. I'm really disappointed to hear that they shut you out over there, Paq. You're one of the most respected members here and over in the modo forums, and I've never seen anything but helpful commentary from you.