Hello! I am using Mac OS X 10.8.2 with Arduino IDE 1.0.3. I am trying to upload my code to Sparkfun Mega Pro 3.3V (I choose Arduino Mega 2560 - it has the same chip). My programmer is AVRISP mkII.
It simply doesn't work. There is no option "USB" in serial port menu - only Bluetooth-PDA and Bluetooth-modem.
I tried following these instructions: http://playground.arduino.cc/Code/OSXISPMKII
, but it did not help (I changed "usb" to "serial" in programmers.txt).
Also I tried installing libusb and avrdude using MacPorts. I installed the latest FTDI driver. Nothing helped.
When I press Upload - the message "Serial port COM1 not found" appears.
Please, help me solve this problem.