No control from Arturia Keylab MKii

[Alexander Louwe Kooijmans]

I have recorded songs with CBB before, and I could send all the Midi controls without issues with my Arturia Keylab Mk II Midi controller. But now, after a pause of 6 months or so (and after some SW updates obviously in Cakewalk, Windows and Arturia) I do not see anything happening anymore in Cakewalk (CBB as well as Sonar). I have no issues with sending Midi to e.g. Reaper and Analog Pro, but nothing in Cakewalk. I have set up the Midi devices and Mackie Control and also have the input and outputs selected correctly in the tracks. Virtual controller works fine. Same behavior with Cakewalk running on an entirely different computer! What could be the issue? Thanks for any help!