Animation Rig Question

I have just bought a tutorial that does not talk about how to setup it’s rig. The rig is also BlendSwap and is called the Flex Rig. http://www.blendswap.com/blends/view/61707

I am using the latest Blender version and when I open the rig file nothing is there. Is it hidden and just not visible? Any help would be greatly appreciated.

Thank you,

David

I just figured it out. I clicked a button that reloaded it or fixed an error. Have no idea, but it works.

For next time: https://www.youtube.com/watch?v=Xg1r-UzvgC8
Or you could spring for the official tutorial: http://www.blender3d.org/e-shop/product_info_n.php?products_id=157