Riyogen

Hello. I'm running on Vista. I've already searched the forums and I don't see any problems. I've downloaded and installed the new full installer. I didn't change ANY files names or removed anything, I double clicked vonline.exe. It shows the screen where you can select Start Game, Official Site, Official Billing Site, etc. When I click start game it brings a window up then immediately closes it. Could someone please tell me why this happens and how to fix it? Thanks.