Can't start launcher

Hello everyone, ok so I rebooted my pc and installed Windows 8 pro. I had it before and it worked fine with Rohan and all the other games, i don't know what's happening now. The thing is that I downloaded the client, Installed it and it says the 2-client running screen... I mean, I double click the Rohan icon but instead of opening the launcher tries to open the client directly like if I have another rohan client opened. So I can't even play or launch the game since obviously without the launcher and updates nProtect detects a "hack".

I don't have other things opened and I don't even have antivirus so... what could it be? :S

Thank you for your response.