mbox with protools express not compatible with mac OS X 10.10.3???

i have been using my mbox mini with protools express on my mac os x 10.6 for a yr now.
i just upgraded my operating system through online upgrade to mac OS X 10.10.3 without even thinking about my protools unit. DAMN IT

I obviously can't reach anyone at avid to tell me what to do next without paying them to do so. It will not work !:confused:

sooooo,
Can anyone tell me what i must do and or buy next ?

Thanks mates.