Error: circular reference in texture stack - blender 2.77

I’m trying to bake a texture from an object to another (selected to active) and i get an error message: circular reference in texture stack, and a partial bake on the active object (like if the error comes later) i’m using blender 2.77
any suggestion? i attach the blender file and the two textures


prova-bake-texture.blend (503 KB)

I solved it
When trying to bake to the active object has to have no texture active in the material by going to [properties > textures] and in the [material textures type list] disable all of them.