Mboxpro 3 Hardware not connected

Hi all,



It seems i have issues with my mboxpro 3 firewire.



The drivers seems to be lost everytime i reboot my Mac.

When I go to Mbox utility it says "Hardware not connected-not streaming".

I have to reinstall the drivers everytime I want to use the mboxpro3 interface.

I tried to update to the latest Mac drivers but still no success...



Any idea ?