HELP :( Arduino + OSX 10.7.1 + Duemilanove/AT328

Hey guys, actually a beginner at the whole Arduino/OSC scene. Got given a kit for an Arduinome 8x8pad (monome clone) and been trying to get it to work so I can run some Max/MSP programs for music stuff. Every time I plug it in the LEDs under the pads cycle from left to right, and I am using Arduino to try and get tests to work or put the newest firmware onto the board.

Every time I hit upload after I compile/verify the pads light up from left to right again and it says it's uploading I/O but never finishes.

I have selected the board 'Duemilanove w/ AT328' and it registers under the serial port 'dev/tty.usbserial-a40h-001'.

I have tried installing the bootloader again, unplugging, restarting.

I have installed the USB serial drivers onto my Macbook and pretty sure I have done every step one by one to get to this stage but nothing will upload.

I have opened ArduinoSerial to try and communicate with the device but still no luck.

I have also tried the simple tests like Blink and no response.

The two problems I am encountering are either the 'Uploading I/O' never finishing, or the error 'arvdude: stk500_recv(): programmer is not responding'. Cannot get around this in any way. Unfortunately I am not too flash with checking out the schematics but I know it has worked before for the purpose of being a Monome so I am not sure if that would be an issue in any way.

ANY HELP WOULD BE MUCH APPRECIATED BEFORE I START THROWING THINGS OUT WINDOWS :0

Thanks all!

Loopback test?

See my signature for a link.