LilyPad Bluetooth Mate Error

I am trying to upload the Pd_firmware to my LilyPad/Bluetooth Mate and keep getting the following error: Serial port '/dev/tty.FireFly-A898-SPP-1' already in use. Try quiting any programs that may be using it.

There are no other programs running on my computer.

I am using the Lilypad ATmega328 with the Bluetooth Mate. Power supply is LilyPad Power Supply with AAA battery.

Thanks- R