did you see the one here?
It did end up being a failed install. I set coldfusion services and IIS to manual. Restarted the server and re-did the CF 9.0.1 install. Restarted the services and the error is no longer thrown. Thank you for this great resource.
This post mirrors yours
with answer = "unfortunately i don't know about anything resolution to this problem other than just totally reinstall ColdFusion."
This may be a late answer but to anyone encountering this now,
removing all the "cfbase2ecfc....class" in /WEB-INF/cfclasses
and restarting the coldfusion application server resolved the issue for me.