I2C Error when using Baro Sensor

As far as i know, the barometer chip has some calibration values that are being read at startup, maybe they are not read correctly?

That's right, yes... So I guess that could mess things up (although I'd have hoped that if it failed then it would have kept the old values).

I've just made some changes to make it retry two more times if there's an I2C error, so if you use a cutting edge build now I'd hope that fixes it for you