Solved.
Tks for your good work, now everything is perfect with Yosemite 10.10.2 and driver 4.2
IMHO this driver is better than the windows one.
Gianluca
Tks For your work,
I am not able tu use f3 and f4 as kbbacklightdown and kbbackligthup with an asus n56vv but only as launchpad and mission control
Am i missing something?
regards
Gianluca