No session audio inputs on Focusrite Scarlett 2i1

[Jeroen Heijne]

I can't get my Focusrite Scarlett 2i2 properly installed. The app will install my soundcard, run tests properly (green light on latency), but wont let me add session audio in- and outputs. Any idea how to fix this?

Windows is all up-to-date, newest drivers on the Focusrite Scarlett as well. Nothing else like firewall or virusscan troubles.