Cycles Render Still fine, Animation Gray I have searched the forums some and am still coming up short on fixing my issue :(.

I am just getting back into blender after a few years break and have already hit a snag.

To the point.

I created a character/walk cycle and set up a scene. 
I can render out a still image perfectly fine, but when I try to render out the animation, I only get gray images.



Above shows the image in object mode/rendered mode/ and the little OpenGL render active viewport button. I also have tried to show my settings and outline as best as possible.

Below is a split image. The top (red outline) is when I render out a still image (I stopped it mid render, just showing that it works fine) and the bottom part of the image shows when I try to render out the animation by selecting the animation button.



I have gotten the animation to render by impending the file in a new blend file, but would like to know how to fix it instead. I looked back at my earlier saves and they too are having the issue. I'm completely lost and would appreciate the help so much! I thank you kindly!

I also made sure there were no hidden objects that were blocking the view and made sure the clipping distance was completely fine for my setup.



EDIT

Added the .blend file
By looking at your .blend file, I've noticed that your character is on layer 1, while your RenderLayer is set to render only layer 2. 

Selecting layers 1, 2 and 9 in the RenderLayer "Scene" checkboxes I managed to have the animation work fine.