
Once you make a New Configuration you should see "SL MkII" "Launchkey" or whatever device you have properly.This will not work if the controller is not plugged in. With the Controller plugged in click the drop-down and make a New Configuration.If you do have the problem of a "USB MIDI Device" note at the top of the MIDI Studio Window a drop-down box that says "Configuration" under it.You should see your Controller listed by name, such as "Impulse." If you only see "USB MIDI Device" or "USB Audio Device" you may have this issue.(On older Mac operating systems it may show the option for Show MIDI Window)


We have seen a small number of users with various Class Compliant USB MIDI Devices have an issue using Mac OS where the MIDI Devices do not appear properly to the computer.
