I did try the button a number of times. It didn't seem to change anything. I was always able to upload the code without the button, no problem. I was hoping pushing the button would make it behave differently in terms of running the code (which I now understand to mean seeing the device on the serial port automatically). In my experience with <this> mac seems to keep the serial connection after upload...except when it doesn't. Honestly, I have found the latest IDE to be more finicky when it comes to a variety of things but I haven't been able to nail down a lot of rhyme or reason. One thing that 's annoying is the IDE seems to keep thinking that I am using it for the first time everytime I fire it up.
Good to know more about how the serial stuff (sort of) works on Teensy/Arduino.
Good to know more about how the serial stuff (sort of) works on Teensy/Arduino.