The error only appears after the calculate button is pressed. The create button works but it takes a long time to open the 747 MB RGB picture from the SSD drive…
Re-registered files:
https://www.musquetier.nl/images/Barnard33_light-FILTER_Red-BINNING_1-reg-reg.fits
https://www.musquetier.nl/images/Barnard33_light-FILTER_Green-BINNING_1-reg-reg.fits
https://www.musquetier.nl/images/Barnard33_light-FILTER_Blue-BINNING_1-reg-reg.fits
https://www.musquetier.nl/images/combined_Barnard33_Ha-reg.fits
https://www.musquetier.nl/images/combined_Barnard33_OIII-reg.fits
https://www.musquetier.nl/images/stack_SII-reg.fits
RGB combined, rotated and cropped image:
https://www.musquetier.nl/images/Barnard_RGB_rotated_cropped.fits