Okay so I'm taking a rigging class and one of my assignments is to create a upper body rig and animate it to juggle. I have created the skeleton, and placed constraints on the joints.

My specific problem is with the key frame. When I try to key frame nothing happens. Like, I'll key frame in 1, click to 4, move the model and then key there... nothing happens. When I key in the frame it seems to be doing it for all of the frames and not just the one no matter where I key it in.

I should also say that there are instances where it will key the frame, but it will only key in frames I have already established, and it will only do it for one joint (i.e. arm, etc). I'm not sure what's going on.

I've had an assignment before where I had no issues with this. Also I'm using maya 2013 if that helps.