I am on 11.01.1 on an older system (see below), and have suddenly begun to experience odd behavior: I see the meters showing signal on recorded tracks in Logic, but I cannot hear anything, either on monitors or headphones. Also, won't take an input signal via hi-z gtr input. Since this behavior started after the recent update, was wondering whether I could downgrade back to 10-something-or-other, to eliminate that as the cause? I couldn't find a thread on this, but if it's here, a gentle nudge would be very helpful...