Error with Rig: Has bone length of zero?

I recently Rigged a Humanoid Character inside of Maya 2014 making sure all my bone orientation was correct and my transformations were frozen before starting to prep it for Animation. Before building the controllers I wanted to bring it into Unity to test that it worked with the avatar. Surprisingly it is not.

Here is the Rig in Maya

and Here is what Im getting inside of Unity

I cant seem to find a solution to this anywhere online. I would like to know what is causing this so I know how to avoid it in the future.

Thank You.