I recently captured a load of new bias, flats and darks for my ASI1600MM. Afterwards I saw that the frame numbers for the bias and flat frames didn't increment. Since I didn't record the timestamp in the filename, it overwrote the previous frame with the latest one. Instead of 450 frames, I had 8... great for disk space but not fantastic otherwise.
The dark frame numbers in the filename incremented fine. I've just tried again and it still happens, log attached for what it's worth.
I'm going to capture them again with a timestamp which is an effective workaround, but does anyone know what I've done wrong?