Hello, sadly still not working.
- Yes, but nothing changed
- no error found...
- Macbook Pro Mid 2010
I read that a lot of people have problems with MIDI and High OS Sierra. The solution could be this:
1. Reinstall the latest drivers for your external gear. Even if it work with all other OSX updates.
2. Right after the restart from the drive install you must open System Preferences>Security & Privacy and click to Allow driver.
I think its a security problem. Maybe this is an approach. But I still couldn't solve it...