You can try deleting his preferences file:
Apple hide the Home Folder in User Library at some time depending on OS System… When you have clicked your Home Folder, and cannot see the Library Folder in there, just do a ‘‘cmd J’’ to show the folder settings preferences and see at the bottom… click Show Library Folder and then you’ll have access to the rest forever.
Go to the Main Library Folder… PrivilegedHelperTools folder…
Trash All the files in that folder from A+ (that folder install SysOptimizer)
Go to the Main Library Folder… LaunchDaemons Folder…
Trash All the files in that folder from A+ (SystemOptimizer and prefs files)
Restart Mac, Restart Audirvana.
It will ask to install Sys Opt when starting first song…
Hope it helps.