Games : Wineskin steam games not launching

I am trying to play KOTOR 2 on my mac and I have everything set up-- my steam is wineskinned, I have wrappers and KOTOR 2 is installed. But, whenever I go to click play game nothing happens. I click it again and it says "preparing to launch" and then I get "error app already running." It says I have played six minutes in the game but I haven't even gotten it to launch. Any help would be greatly appreciated. Thanks