First a little go through to my gear:
iMac (late 2015 model)
OSX 10.11
Cubase 7.5
Scarlett 18i20 (1stGen)
Mix Control 1.8b2
But when I use my Axe-FxII XL as Interface, no prob.
This combination got no sound, my studio project gotting more urgent and urgent,
anyone can give a hand would be great!!