Beginner Question BMA020 Acc

[xite]

Hey,

i'm building my first multiwii. today i finished my shield and connected all elements together, but i have a problem with the BMA020 acc sensor:

The MultiWii GUI says: I2C Error: 1 and the rol value of the Acc-Sensor have a constant value of -1000. The Board is blinking fast which indicates a i2c error.
Picch and Z Values of the BMA020 are changing when i move the board. No errors when i disconnect the bma020.

Connection diagram of the sensor: http://www.microcopters.de/photos/95/bma020-pullups.gif

Any ideas on this behaviour? Could the bma020 be defect?

[mgros]

Try this connection