Hoping someone else had this issue and figured out a resolution.
After installing the new Hardware Connection service update, my Kontrol S61 (MK3) keyboard now won't link to any plugins within Komplete Kontrol. It will still trigger notes and Midi controls like aftertouch, but otherwise it doesn't link to any plugins within Komplete Kontrol. I don't even have the option to SELECT "Plugin". I bought this keyboard to have more detailed control over the plugins, but now it's not much better than a keyboard costing half as much. I literally have to go in and manually assign each control through "Midi Learn" in order to use the keyboard with Komplete Kontrol, or even my DAW.