When uploading the 'blink.ino' from the GabrielNotman test set to my Autonomo (I've connected the battery and the usb-cable), I got a Java-error:
java.io.IOException: Cannot run program ___REMOVE___/bossac.exe
I could not find anything on the internet about this error, so I added the board 'Arduino SAMD boards 1.6.2'.
Now I get the warning message as mentioned above twice. One for the SODAQ SAMD-board and one for the Arduino SAMD board.
I've uploaded the sketch again to my Autonomo and guess what? It works! The onboard led is blinking!