Pathfinding using Unity 4.3 2D features

Hi! I'm making a 2D top-down game (like old Pokemon games) using Unity 4.3 new features and I'm trying to make arongranberg pathfinding project work unsuccessfully

I made a test project to work on it, so far I have created a grid graph like this
http://oi40.tinypic.com/23vjfie.jpg

I added to my Enemy sprite the Seeker component, AIPath script, Character controller component and the Astar AI script that arongranberg has in his get started section http://www.arongranberg.com/astar/docs/getstarted.php
http://oi39.tinypic.com/9ucavb.jpg

But my Enemy (the red square) falls from the scenario, his Y position goes down and down with negative values, it never ends

So please if somebody can help me to make it work I would be eternally grateful

 

Hi I am new to Unity and i am trying to make a game similar to the old Nuts Milk for NES.

If someone can provide a demo or tutorial for AI pathfinding with the new 2D features it is going to be AWESOME !!!

 

noone ?