Problem Parenting Eyes to Head

Hey!

I’ve had this problem for a while with the auto-generate riggify from bones add-on for a while. I’m wondering why this is happening. I made some custom bones in addition to the ones it gave me after riggify, for the eyes. In edit mode, I select the eye bones then the head bone last and parent, keep offset.


Though, after that when I pop back into any other mode the model will go crazy as the whole rig will try to point to the eye target.


I feel like it’s causing some sort of parenting loop somehow? But I can’t find any conflicts like that so far. What do you guys think? Has anyone else had this problem?

  -Thanks!

EDIT: Here’s the .blend on Google drive:
https://drive.google.com/file/d/0B-RqxBfsDDtFQnNzSXVHZ2N6eDg/edit?usp=sharing

in your ik modifier make sure you set chain length to 1