Hi, last night I tried using the Live stacking with my D850. Flats, bias, darks taken earlier in the day using the same Bin4 (and, FWIW, same Iso and exposure), and selected in the live stacking screen. However when I tried to start the live stack I received an error that the flats and lights were not the same size. Unselected flats, but received error for darks; unselected, then same error for bias. Unselected all and it worked with lights-only. Any thoughts on the reason for the indicated size incompatibility?