Help with client..

When i download korean warrock from nexon.com i get a error that says can not open OPTPATCH.ZIP

Well here is the Korean Warrock installer:
http://warrock.nefficient.co.kr/warr...RInstaller.exeⓘ

But there are afew ways you can install Korean Warrock though like through Nexon Plug or by logging in at the site and clicking "Game Start".

are you using vista