"No active camera" error

Ran into this problem tonight with a couple expressions I've used in the past in CS3+. My scene has 1 camera. It it's set to active and the eyeball is on and its in/out is the length of my comp. Is 'activeCamera' broken in CS6?

These expressions are turning off:

delta = toWorld(anchorPoint) - thisComp.activeCamera.toWorld([0,0,0]);

radiansToDegrees(Math.atan2(delta[0],delta[2]))

and

C = thisComp.activeCamera;

V = C.toWorldVec([0,0,1]);

P = toWorld(anchorPoint);

lookAt(P, P + V)[0];