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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
That's odd.. Bright blue + red means it's trying to establish a USB connection.
I've only come across one other issue of this - and that was today.
So (as the log would suggest) it works ok out of bootloader mode? The crazy thing here is that the USB code is exactly the same for the bootloader and the main Espruino - it's compiled from the same source code.
Have you tried unplugging Espruino, and then plugging it in with BTN1 held down? Also maybe just try holding reset down for maybe 5 seconds (with BTN1 held down too). It could be that the OS doesn't like it disappearing from view and then reappearing a fraction of a second later.