There's also a checkbox in Invigorator that allows you to use composition lights. I think it's right next to to the 'use comp camera' checkbox. Don't make the mistake of turning on the 3D switch for the invig layer, as this mucks things up.
Invig doesn't support depth of field, as far as I know, so if you want this AE camera feature you may be out of luck.
Simon Bonner