Due with i2c Digital Potentiometer

Hi all, i am experiencing AD5171 tutorial with Arduino due ( http://arduino.cc/en/Tutorial/DigitalPotentiometer ) I got level shifter on i2c pins. But it don't work. I uploaded i2c scan sketch, but device couln't be founded. Is it arduino due's problem or anyone have got an another idea?

For SDA/SCL you don't need pullup resistors. Only for SDA1/SCL1.

Pinout:

AD5171 ------ DUE 1 ---220-LED--GND 2 ------------3V3 3 ------------GND 4 ------------SCL 5 ------------SDA 6 ------------GND 7 ------------GND 8 ------------3V3

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Very thank you Palliser its working now!