Unity2D: Animation Event Not Firiring

Hey there, using Unity 5.3.5f1 (64b) here and I have an animation event that never fires.

On the gameobject with the Animator component I have this simple function:

     public void ExplosionEndEvent()
     {
         Debug.Log("never called");
         mainController.Reset();
     }

And I want it to be called when the explosion animation ends. Here are some pics of the Animator state properties and of the animation.

And this is the state transition of the Animator that goes back to Idle after the animation of the explosion is complited.

The issue is: "never called" is never printed in console.