Mecanim, Inverse Kinematics, and the HeadLookController

I've been having a lot of trouble implementing a head look functionality in a prototype that I'm working on. I am using the default robot that comes with unity. So far using the build in IK functionality to have the robot point his weapon at a target is fine.

I tried to slap on the HeadLookController script and the Robot's head bends in an odd fashion when looking around. What I want to know is if that HeadLookController found in the BootCamp or the Third Person Unity Demo is incompatible with the Mecanim system, or if it should work by dragging and dropping the script and adding the look target to the script. Thanks, any help would be appreciated.