Cycles render engine is not rendering anything I've looked everywhere in SE for a solution, nothing seems to be working. For no obvious reason cycles rendering is not working, as you can see in the screenshot, here's what I've tried to do:


check/uncheck sequencer in post processing tab.
changing between global and local view.
switching between layers.


is there anything else I can try? 


here's the blend file:
your camera is pointing to nothing... if you press numpad 0, you see why you get that "empty" render...

select the camera and press CTRL + numpad 0, you now see the selected camera points to the scene objects, then hit F12, you get what you expected: 



update

here's the result after appending all object and actions from your file into a blank new file