I just got my Roccat KONE for christmas yesterday (Big surprise, I helped my mom ordering it :P), and let me tell you what happened.
I plugged it in the USB, and it started installing some automatic drivers. After that, the mouse stopped working. It lights, and the button infront of the scroll wheel (it's bound to opening the START menu) works for some reason. I tried to download all kinds of drivers from ROCCAT.ORG, but it didn't work, and when it prompted me to restart the computer, I did so, and when it started up, it said that the installation of the drivers failed.
Please help me someone. I love this mouse so much. It has the best grip ever, and I can't wait to use it. :P I am a little frustrated by this.