Blender 2.59 animations are disabled

Hello I am working on animating a character from blendswap using blender 2.59. Everthing was going fine until the animations suddenly became disabled. I have two animations. An idle animation and a walk animation.
Here is the blend file.
dawidh_robo.blend (1.11 MB)

The animations work fine if I keep them in seperate blend files, but they cannot coexist properly on the same armature.