I’ve had a recurrent problem with A+ 2.6 and now 3.0 (after just one day of use) reverting to the initial setup screen (which then won’t enter any music folder) after a period of normal operation.
With the help of another forum user I’ve found I can replace the library folder with a backup version, or I have simply restored Sierra to an earlier date, to get Audirvana working again. However, does anyone know how to stop this problem happening in the first place?