Add "-b57600" to the "command-line options window."
You're not using the same avrdude that Arduino uses. And I don't see you specifying a COM speed, which is probably a good idea, since the duemilanove bootloader does not run at the same speed as the "real" stk500. Add "-b57600" to the "command-line options window." If that doesn't work, add "-v -v -v -v" and post the output again.I would avoid the GUI interface to avrdude and just run it from the command line. Just because I don't trust such things...
The beauty of using the commandline is that there is nothing hidden.You get exactly what you type, which means that as long as the underlying commandline tool works, you can *always* make it work.This is not always the case when using a GUI wrapper.Another benefit is that the commandline works across multipleOS's whereas most GUIs are limited to running on Windows.--- bill
Now only if the Arduino IDE would park a copy of a sketch's hex file into the user's sketch directory directly like it once did so many moons ago, I would be a happier camper.
That is the beauty of open source.You can make do whatever you want.--- bill
The beauty of using the commandline is that there is nothing hidden.