Hi
i have the same problem in logic 8.
i just bought the miniMg V it worket well for 2 days but then it crashed totaly.
i have everytime the failure - audio engine stopped - like every second.
i deleted all hardware stuff like virus ti and novation..
then i deleted the logic plist.
then logic runs but the miniMg not.
in audio unit manager the miniMg dont get thru the test. its says failure.