I'm looking at the infinite_cheese_machine.cos file, but I don't see anything mentioning images at all. Unless this is it? I don't know very much about CAOS:
new: comp 2 23 1 "infinite_cheese_machine" 44 0 1000
With the "infinite_cheese_machine" in quotes being the image. I looked in the images folder, and infinite_cheese_machine.c16 is there.
I think I'll just be reinstalling, but it is a pretty funny problem. I suppose it's about time I cleaned out some of the agents/breeds I don't use any more, anyway.