I finally tried what I was planning, and with a 910rc1 install, I uninstalled CCC, and then installed CCC from 804 and it worked. I've been meaning to try it for a while and now I feel more the dummy for not having done so sooner.
So I'm fine with considering this to be my solution and moving on with life.
I also really appreciate the help I've received, and I'm more then happy to continue debugging if there is interest. Just let me know what you'd like me to test. I'd still welcome getting to the bottom of this issue and potentially help others avoid this problem.