"Basic with Callbacks" example. Works fine for Nano, but fails on the Arduino Mega 2560 - it can't compile the sketch Build options changed, rebuilding all In file included from /Users/redacted/Lib ...

I just did an up date to Arduino and got this message. I have used this computer and this arduino a few times before without this issue. Arduino: 1.6.8 (Mac OS X), Board: "Arduino/Genuino Mega or M ...

To fix the Error compiling for board Arduino/Genuino Uno error, make sure you've selected the right board and install any missing Arduboy games.

Frustrated with one of the greatest failures to become an Arduino tinkerer, [psgarcha] took a good, long look at the Uno board. He glanced over to an Arduino Mega board. Something looked different.