Reply to s4 not being recognized by Traktor 2

Hey all,

I lent my S4 to a buddy while I was traveling and haven't been able to get it to work ever since. There are a few interesting issues:

-None of the buttons work, but I can still play sound through the machine (clicking play in traktor with mouse)
-I use a mac, the s4 still works on my friends Windows machine.
- I have restarted the computer
-I have updated to NI's latest s4 driver.
-I have tried both the "restore" button and setup wizard.

What now??