Trying to generate Master Flat as per the excellent tutorial by Vincent. I successfully created Master Bias and Master Dark (32Bit FP). My Flats from CCDSoft are 16 bit Integer but when I press the 'round blue button' I get an error message "ImageCalibration couldn't execute this instance in the global contect. Reason: Invalid calibration frames specified. Any idea what it needs that I am not supplying?
Thx, Charles
