aide demandée MOTU Midi Express 128 et Mac OS High SIERRA

Benoit,

Please follow these instructions.

If I can be of further service, please let me know.

Dave Roberts - MOTU

Enabling MOTU drivers in macOS High Sierra

To improve security in macOS High Sierra, the system extensions for newly-installed third-party software will automatically be blocked from running. If your MOTU interface is not showing up in MOTU Audio Setup, the MOTU Discovery App, or your DAW on High Sierra, you might need to enable the driver in your System Preferences.

To enable the MOTU drivers, follow these steps:

Download and install the most latest installer for your MOTU interface
After restarting, open System Preferences
Select Security & Privacy
In the General section, click the Allow button
System Prefs High Sierra

Notes
The Allow button will disappear 30 minutes after installation. To show the Allow button, run the installer for the MOTU driver again
This behavior will only occur when installing a MOTU driver on High Sierra for the first time. If you have installed the driver on a earlier version of macOS and then upgrade to 10.13, you should not need to enable the driver