Hi Philip,
sorry for beeing late, was on a business trip the last days.
And to answer your question: no, I haven’t got these error messages yet.
Maybe you should test, whether the server, the grove drivers or the Android App got updates in the meantime.
Also check, whether you’ve selected the correct file:
sudo wget http://arduino.esp8266.com/linuxarm-xtensa-lx106-elf-g46f160f.tar.gzIt has to be the ARM file for the Raspi.