Mixtrack Pro 2 Traktor

My Newmark Mixtrack Pro 2 doesn't show up in the Traktor 2 Pro configuration as mentioned by the support artikel:
http://www.numark.com/kb/article/1407
I can only see an 'Audiocontroller for Multimedia' in my device manager but it doesn't find a driver. In Serato it works, but it seems like something is missing... can you help me and provide a driver?
I already tried deleting this device and the device @ Audio-. Video- and Gamecontroller, rebooting and restarting again, but I couldn't get it to work.
EDIT: System is Windows 8.1 x64
Mixtrack Pro 2 Traktor

Traktor 2 Pro Download

Download

Numark Mixtrack Pro 2 Drivers

Mixtrack Pro 2 Traktor

Mixtrack Pro 2 Traktor Headphones

Setting Up the MIXTRACK PRO in Traktor Contents 1. Install the latest version of Traktor 2. Configure the Controller Settings 3. Download and Install ASIO4All (Windows Only) 4. Configure the Audio Device Settings Install the latest version of Traktor Before you begin, make sure you have the latest version of Traktor installed.