Just as a heads up, the only way I was able to get cgminer to see my BlueFury under Mac OS 10.7, 10.8 and 10.9 was to 'unload' the new USB modem

sudo kextunload -b com.apple.driver.AppleUSBCDC
sudo kextunload -b com.apple.driver.AppleUSBCDCACMData

Hopefully this will save someone else a LOT of hair pulling