Combat arms won't install HELP!

Hello, I have contacted nexon support literally 3 times in 3 different tickets about this, even when I told them that I had already tried their "fix" to it by downloading the full client and turning off anti virus and firewall, nothing works

I start Combatarms_eu.exe, the loading icon next to the cursor appears, but nothing happens, no error message, nothing at all. It just loads for a few seconds and dissapeare, I have also re-installed akami netsession several times to try to fix this (if that has anything to do with it) but it doesn't work.

<-there is the file, as you see this is the third file that I have downloaded, tried re-downloading after deleting every nexon related file on my computer with antivirus and firewall turned off, still doesn't work.



EDIT: Running windows 8 64 bit