Like a bolt from the sky, forces have converged to alert me of sebtags incompatibility with ColdFusion 8.0.1. As CodeCop runs on sebtags, that meant that CodeCop wouldn't work on ColdFusion 8.0.1 either.
Fortunately, the problem was easy to fix. While I was at it, I wrapped up a few other small bug fixes and enhancements for sebtags and put it all together as sebtags 1.0 RC2.
I also updated CodeCop to use the newest version of the custom tags, giving it a version of 188.8.131.52.
So, everything should run now on ColdFusion 8.0.1.
Sorry for any trouble.