Attached animations are not been founded

Unity Engine
1

Hi! I’m having this error when running the scene:

The animation state Idle Could not be played because it coundn’t be found!
Please attach an animation clip with the name ‘idle’ or call this function only for existing animations.

But I attach the animations:

Please, why then this message occurs and how can I fix?

2

maybe names are case sensitive

3

Is solved! Actually in Unity 4 you have to go to Player Import Settings > Rig > and in Animation Type select Legacy.
This make all the animations works.