'Tile already played' alert popping up at inappropriate times after multiple plays.

[RushMyers]

Somehow the clickTile() function is being called twice sometimes when the tiles are clicked by the human player. It is called once when it should be, and then somewhere it is being called again( which is what I can't figure out ) after it has received the 'played' class, which triggers an alert. It only seems to happen after at least one game has been played, and sometimes after multiple games are played with no issue. But once it starts, it happens every time.