Hmm, interesting.
I have Red Chams and I thought I'd give this a go without the bypass. (Vista 32bit here)
Everything loaded and it was good but I noticed I was unable to move my cursor from the Grunt Server on the server selection screen. I couldn't choose any other server because my cursor was just locked on to that.
I'm guessing there's some color there that nexon put to prevent pixel aimbots from entering a server as I was too high of a rank to join Grunt anyways.
So, I tried again except starting the aimbot later when I was in the server I wanted. Everything was good except it doesn't work in game. It won't pick up colors when your in the game.
I went back out to the server selection screen to see if the aimbot won't work if you don't do it before you log in, but no, my cursor got stuck again at the grunt server.
Weird.