I am trying to get A* Pathfinding to work with 2D Toolkit Tilemaps. I have a separate layer for my tiles I want to use in pathfinding. I have all the tiles setup with a polygon collider. When I scan for a grid in A* using a ray collider type, it returns 0 unwalkable nodes. However when I scan using a sphere collider type it returns 0 walkable nodes. Does anyone have any ideas what I might be doing wrong?