can't download kmst setup..

When I try to download the kmst setup from maplestory.nefficient.co.kr, the download speed is VERY slow, around 100-800 bytes per second.
When the file is 2,3GB it says it will take around 800 days.
The weird thing is that the download is finished after maybe 5 minutes, and when I open it, it says it's broken. (Win32 application error)
Is there any other download links available that works for KMST? Is there a way to fix the download issue?
I'm using a Chrome browser by the way, and I have tried on Internet Explorer, same thing except the download doesn't start.
Can someone please help me?

Try using a download manager like Orbit.
http://www.orbitdownloader.com/

Thanks alot! It works perfectly now!