Game suddenly shut down

can some one help please just got new to the game, elsword HK by the way, after making my character and enter the tutorial the game suddenly shuts down i've already tried logging in again a couple of time but it's still the same. help please

firewall problem?

un.. just tried it, turned off the firewall, still no change it closes after logging in a character, a friend of mine told me it's was some kind of bug.