SB_intersect_circles.rb lines 443 and 444: "circle_intersect_16.png" and "circle_intersect_24.png" resp., but files in Plugin are named "circle_intersect_24.png" and "circle_intersect_32.png". If I correct source or renam .png files, SU loads w/o error msg, but there is no circle intersect cursor (blank square).