You are trying to fire a Cue in Qlab from the cue list in LiveProfessor?
Then you don’t need to add a Hardware Controller in LiveProfessor.
Drag in a OSC Send cue in LP.
Click “Edit destinations”:
Name: Qlab, IP: Ip of Qlab machine, Port 5300 (default qlab listen port)
Click “Add new destination”.
Select the destination, in the drop-down list in the cue.
As command, send: /cue/1/go