I bought Logic about 5 years ago, used it for a little while, haven't really used it much 'till recently - & experienced all these problems.- Has this ever worked correctly ?
As I say it was O.K. at first.- Has this never worked correctly ?
Updated OS to Catalina. Delated Logic & redownloaded but that didn't help.- If it has happened suddenly, what had changed prior to that ? (new audio interface, new plugin, Logic update, OS update, new computer etc. etc.)
Several times.- Did you try a restart ?
Not sure what a 'cold reboot' is, sorry.- Did you try a cold reboot, including switching the audio interface off and on ?
When I allow access to the Input Device (Preferences/Devices/AudioBox USB) - nothing happens. If I change to System Settings I get the Initializing Audio stalemate.- Did you allow access to the audio hardware ?
It happens all the time - something is really amiss.- Does it happen with only the built-in audio input *and* output ?
Haven't tried that. Not sure how to do that I'm afraid.- Does it happen after logging in as a new user ?
...but that was five years ago, right ?it was O.K. at first.
Switch the computer and hardware off, wait a minute, switch it on again.Not sure what a 'cold reboot' is, sorry.
Go to System Preferences>Users&Groups and create a new user account with admin privileges. Then log out and log in as this new user to get a clean slate. Check if you can get Logic running (first with the built in IO, if that works, try AudioBox USB).Not sure how to do that I'm afraid.
Went to HD/users/<myname>/Library/Preferences but couldn't find anything like 'Logic preferences'.try deleting Logic's preferences in you>Library>Preferences
Are you sure your Audiobox and its drivers are ready to run on Catalina ?