I use Studio One ver5 on Windows10 version 2004. when I connect my M-Audio Keystation 61 MK3 I cas ony use the 'Keystation 61 MK3' MIDI device which is used by the the keyboard part of this controller.
However Studio One does not seem to be able to detect the other device this controller provided which is 'Keystation 61 MK3 (Port 2)' used for Control Surface protocols - I do not have such problems with Ableton 10 or Reason 11.
Because of that I cannot use the transport functionality of this keyboard controller which would allow me to control MIDI recording from the same device.
Is this a bug in Studio One?