4937076518
notes, - Use our own callback which doesnt exit() blender. - Hard coded 'MONOSCNR.ICM' is bad, should this be a user preference or stored per image? - imb->crect was being set to imb->rect in some cases, disable this because its possible 'rect' gets reallocated and crect becomes freed memory. - when crect cant be created draw pink checkers, so users dont get confused if color correction isnt working. (previously would draw the uncorrected image, if it didnt crash)