Please try the latest version and let me know whether this fixes the issue for you. In bfgminer you just need to
install these drivers
http://www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspxplug in the device, open terminal and run ls /dev/cu*
find your device which will look something like /dev/cu.SLAB_USBtoUART
in advanced options in MacMiner put -S /dev/cu.SLAB_USBtoUART then click apply before starting to mine.
got my usb ASICMiner going his way.
seems to overheat, or maybe triplemining is having some problems.
any suggestions on the settings?
i might pick up a better heat sync and some thermal paste when fry's opens.
thinking of getting a raspberry pi for my stick too.