Gamelauncher not working.

Since the last patch I've been unable to start Maple using the gamelauncher.
If I press on "Start game", nothing happens.

It works perfectly fine on my WinXP computer.
It doesn't work at all anymore on my Win7 laptop.
My friend who's using Win7 too has no problems at all with this.

Nothing shows up at my processes.
Does anyone know how to fix this problem?
It's really annoying to boot the game through the site.

Thanks.