I've just upgraded to V1.2.3. Am using SU 8.0.4810 Free Version. I can't get the tone mapping controls for brightness or contrast to respond. All other sliders work fine. I've restarted SU, restarted my machine and still get no response. Scene size is set to building, Lighting Characteristics set to Exterior although I've tried other settings on these and nothing seems to matter. Anyone have similar problems? I tried a search but haven't found anyone posting anything similar.