Hey MallenLane, Symmetry painting can be achieved by clicking on the "Advanced" button in the brush's panel. Hey Martial and Jcleaver, Please contact me at konan@sympatico.ca. I'll figure out what the problem is on your side. I can send you a special build of the program that will tell me exactly where the error is occuring. Then I should be able to diagnose the problem. Please include in your email your exact system specifications.