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[on:]

Hello everyone, I'm using an iMac with 10.6.8 MAC OS (snow leopard) and an Arduino Duemilanove w/ ATmega328. When I try to upload any kind of sketch I get this message "avrdude: stk500_recv(): programmer is not responding" and the uploading stops. I also tried with another computer, this time Win7 , and it worked. I tried with this test here - http://arduino.cc/forum/index.php/topic,73748.0.html - the loop-back test, and it failed. What should I do?
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[Reply #1 on:]

What serial port are you selecting?

Have you installed the latest FTDI drivers from ftdichip.com?

[Reply #2 on:]

Yes, I have and I know it's strange. I'm using the serial port /dev/tty.usbmodemfd131

[Reply #3 on:]

Are you sure it is a duemilanove?

FTDI chips are usually named "usbserial" while boards (like the Uno) with the ATmega8u2 get named "usbmodem".

[Reply #4 on:]

It was a present, and I was told it was a duemilanove. How do I verify that?

[Reply #5 on:]

Isn't the name printed somewhere on it?

Post (and attach) a clear picture of the board. 

Also, just try selecting "Uno" in the Board type to see if it works.

[Reply #6 on:]

Thank you very much, it is working now. I've chosen "Arduino Uno".