Hm... Come back to this.
After building my new desktop, I tried playing RO2 only for it to crash. It's strange because my previous desktop, which is nowhere near as powerful as this one, played it perfectly fine. So yesterday, I decided to try again. Same thing. Whatever I guess...
Crashed each time you start or during the game? What OS? Btw, this is not the thread for "trouble shooting", but I think it's okay. I use Win7 and it's stable, when I use Win10 it crashed all the time (during game, either walking or using kafra tele service or change channel).