firewire dropping audio
Mac Mini i7 16GB ram 500GB ss hd
Mavericks 10.9.2
Logic Pro X 10.0.6
Firewire out to Mackie 1640i mixing board
Audio drops out completely...
VIrtual synths, Drums and audio files VU meters show activity
External synths keep playing with audio (they're external)
But everything IN THE BOX is silent - no audio out via firewire.
A restart of Logic will clear it - but after a while (and several restarts of Logic) I have to reboot the Mac.
This did not happen prior to upgrading to Mavericks- everything worked perfectly.
I've read on other boards people are having trouble with firewire and other audio devices.
Any help? Suggestions?
Mac mini, OS X Mavericks (10.9.2)