Faderport ignores Instrument tracks in Studio One 3 Pro. I do a new project and create, for example, 5 audio tracks and 5 instrument tracks. I can select the audio tracks by the "Channel Select" buttons on faderport. But it's not possible to select a instrument track. It works in CuBase.
Windows 7 64bit PC, Studio One Pro 3.31, Presonus 32.4.2AI conected by Firewire 800. FW 9194