I just got KK too and ran into a similar problem. you have to have Cubase find the plugin folder manually. it was pretty easy. this was helpful. I’m using Cubase 7.5
https://support.native-instruments…inistration-in-Cubase-7-and-Previous-Versions
Also If you aren’t sure of the folder to add in Cubase -
Open Native Access
Choose Komplete Kontrol
on that side window that pulls over choose Installation path and that will tell you where the plug in is located so you know what folder to add.
Hope that helps