
these are my lights:

(600s lights are named "Venus", but that's incorrect, just something that the ASIair does when you slew from a named target to an empty piece of sky - the name for the captured subs don't change after slewing from the named target; I guess the AA should've named it FOV, but I don't think this will affect stacking in any way.)
my flats:

this is what calibration shows:

I was trying to stack 300s lights with 600s lights, and I have all the correct flats per session, and the correct darks per exposure time, and biases
but it has a problem with my flats, "no frames found after calibration"