Which DAW are you using?
Which firmware version are you using out of the box?
Have you upgraded your G2 firmware version 1.02?
-Did you clear out previous firmware versions in the "Audio MIDI Setup", post firmware upgrade?
How did you setup (connect) your QCon Pro EX and Q Con Pro G2?
-Are you using a high powered usb hub (iCON - One Hub) to power both devices?
Please tell me any other information you may have.