What does this error mean?

[tlfritz]

We were trying a non-FIRST device and used the magnetometer example as a base to work from. We have gotten through the first hurdle by realizing there was an IP address mix-up. We have successfully deployed the code and had no problem executing the program but we ran into other issues.

If anyone has experience with Pololu Digital Gyros or IMU's then we could use some pointers. We are able to see the device over I2C and read registers unfortunately it doesn't look like we can successfully write to them. We need to be able to do that to configure the gyro.

tlfritz