The two photos show the combs of a deadout I cleaned out of a swarm trap yesterday evening. I can't really find a cause of death, but there was a lot of moisture in the box. My intentions were to leave them alone for the winter, since they swarmed so late.
Please notice how nice and even the combs are. I didn't have any frames at the time, so I put top bars with triangle wedges in the box. There wasn't a single cross or brace comb.