I’m on a Mac mini, with the latest version of Sierra. The installed Yamaha/Steinberg driver is the latest. I continue to have an ongoing issues that has never been resolved: often (one on three times?), when I turn the UR824 on, it is not recognised by dspMixFx, or by the system. I can then turn the audio interface off, and on again, and it works fine.
I totaly uninstalled (with the official uninstaller) the driver, and the reinstalled it, but the problem persists. Is there anybody else with this issue? How is he/she dealing with it?