Hi I get this message when trying to upload to my brand-new just out of the box Arduino Duemillanove. I have used two other Arduino Duemillanoves before on this same computer with no problem. I have selected the correct serial device under tools. I have tried everything on the troubleshooting page at arduino.cc. I'm not an Arduino noob but I don't know why I can't upload (Firmata) to this brand new Arduino. I am on a MacBook Pro running Mac OS X 10.5.4.
Can someone please give me some good answers to fix this problem? Note that I have already tried the troubleshooting tips.