When using ProAnimator for the latest version of After Effects, make sure to also install the latest version of ProAnimator as well. For example, if you are using ProAnimator version 4.0.2, After Effects CS4 won’t recognize that version of ProAnimator.
To set up ProAnimator, create your Composition in After Effects, and create a new Solid. Then, apply ProAnimator to the Solid by going to the menu "Effects > Zaxwerks > ProAnimator". Once you have applied ProAnimator to the Solid, select the Solid, and in the Effect Controls panel, you will see the ProAnimator controls. Click on the "Click to Edit ProAnimator" button to go into the ProAnimator interface.
If you’re using the latest version of ProAnimator, and are still having issues, please let me know the error message that you are seeing.