I shoot exclusively with cooled CMOS cameras and use temperature and exposure length matched darks to calibrate the lights. If I, by mistake, leave the Optimize option ticked on in the Master Dark section then the resulting calibrated frames are no good - something I usually don't find out until I complete integration. Would it be possible to have the Optimize check box defaulted to off instead of on? E.g. I note that Debayer allows the mosaic pattern to be a saved default.