Add me to the ever growing list of "not in sync" errors. I'm using an Arduino UNO R3 / ZUMO Shield combo.
Had been working for a couple of hours then all of a sudden I started getting the subject error.
It started as an intermittent failure and is now solid. I've tried all the tips suggested in this post as
well as others in this forum. None work. I've even update Arduino 1.0.1 to 1.0.3 and updated the USB drivers,
all to no avail.... ?????