Can't find serial port on OSX with ISP Programmer

Hello all,

I’m trying to program an attiny84 with an stk500 as my ISP. I installed the Mac AVR CrossPack, and I have avrdude installed.

However, the stk500 doesn’t show up as a serial port when I connect it with a USB <-> Serial Adapter!

avrdude -p attiny84 -c stk500
avrdude: ser_open(): can't open device "unknown": No such file or directory

avrdude done.  Thank you.

Double checking in my terminal:

ls /dev/cu.*
/dev/cu.Bluetooth-Modem    /dev/cu.Bluetooth-PDA-Sync /dev/cu.Bluetooth-Serial-1 /dev/cu.Bluetooth-Serial-2

None of those seem to be it. Likewise, there’s no tty.usbmodem or tty.usbserial.

Has anyone had a similar problem, and know how to solve it?

thanks!