Maya 5 - Attaching Cameras (with AIM) to CV curve to Motion Path [Animation]

Hey guys,
I just felt like making an animation for a friend today, and when I created a Camera with Aim, I tried to Add the Camera to the motion path, and an error came up saying that camera.XScale already has input node or something like that… Whats up…

BTW- I tried locking the Translate and Scale nodes, but still error occured.