Logic Pro X and Frontier Design Alphatrack works

just FYI, I finally figure out a way to make Alphatrack working with Logic Pro X under ML.

install driver and put the MIDI device bundle in the proper place. Add not only the Alphatrack control surface, but also the Mackie Logic control. Now, the Logic control must be "in front of" the Alphatrack in the Control Surface Setup panel, either drag the Logic control to the top or left of Alphatrack, set Alphatrack in Logic mode and it works. Haven't tried every single feature but the basics working well.