I just the kracken x60 just before Christmas and was having the same problem. Also when I plugged in the usb I would get a 690LC driver problem. After a couple days of tearing apart the NZXT kracken control software I found chillcontrol to be the issue with the software. I downloaded KUHLER_ChillControl_V1_2 from http://www.antec.com/Believe_it/index.php?page=support_productInfo_details&ProdID=77086 and this software controls the kracken x60 perfectly. No need for the NZXT kracken control headache. Hope this helps everyone like it helped me.
