Here's how you fix this.
Step 1: Run the application "Prizma Launcher" as Administrator.
Step 2: Input ID and Password into the proper fields and hit "Start".
Step 3: Select a character if prompted to do so and when the box comes up to put in a nickname, DO NOT CLICK ANYTHING. Simply write what you wish in there.
Step 4: After this, you'll get a bit of english text, which is generally useless. After that will be some symbol or korean text.
Step 5: Simply go forward using the up arrow. When the card people block your path, hit the Control key twice with the up arrow pressed in order to perform a double jump over the spears. You'll need to do this I believe two or three times.
Step 6: After you get to the guy with the big head, you'll be able to get into the game.
Step 7: I need your IGN so I can add you.