Hi - I'm really excited by the Circuit Playground and it's potential for educational projects. I'm trying to upload some programmes on to it but I can't get the CPLAYBOOT drive to show on my mac. I hit reset twice - and the current script stops - but I don't get the red and green, and the drive doesn't appear in my finder. Am I doing something wrong or is my board a dud? I've got it working with the Arduino web IDE and it says Circuit Playground Developer edition on the board so I'm assuming it should work with the MakeCode environment. Help appreciated!