Auth Error, help me please

[lex7796]

Hello guys, I just got my own metin2 p-server and a guy keeps shutting it down. I got no idea how, or why, but I tried to ban it's IP. After a restart, I get this error:

 Spoiler

Segmentation fault (core dumped)

And in auth syserr it's this:

 Spoiler

SYSERR: May 22 20:21:10 :: hupsig: SIGHUP, SIGINT, SIGTERM signal has been received. shutting down.

Can you please help me? I'm really desperate because of this.
Thanks in advance.