Well, in the car, the player has to visibly pause to output those error messages, because the baud rate is so much slower in car (unless you've up'd it to 115200 in config.ini).

That's about the only difference I can see.

If you're in the testing mood, I'll spin another kernel for you here in a minute or two.. this one SLOWS down the I2C protocol immensely, BECAUSE TALKING SLOW WORKS SOMETIMES FOR FOREIGNERS

UPDATE: Okay, try this.

-ml