I started to work on a sketch today and when I tried to download it to my Sparkfun Redboard it keeps coming up with "Please reselect the board from the dropdown menu" error. I've reset my Acer chromebook running Version 60.0.3112.114 (Official Build) (64-bit). I've tried plugging and unplugging the board. It always shows up as Board at /dev/ttyUSB0. My sketch compiles fine. I'm out of ideas