Max not communicating with Arduino - help!

I am using Max MSP and have an Arduino Duomilanove board. I downloaded the Maxuino test patch and Firmata software, uploaded Standard Firmata to my board, closed Arduino and opened the Maxuino test patch. I had an LED attached to pin 13 which was working fine on an Arduino sketch. When I try and flash the LED by clicking on the metro object in the Maxuino test patch, the RX LED lights up, but not the manually connected one. Can anyone tell me what I'm doing wrong? There is nothing about this problem on the Max forums and it's really frustrating. Thanks!

I have the same problem??
Downloaded Max-Patch from here:

Uploaded StandartFirmata from the examples files, closed it. Started arduino_test.maxpat in Max/Msp, but LED 13 test doesnt work??

(OSX, MacBookPro)