Do the boot without loading code. You may need to retry a few times as WebIDE sometimes fails.
Thanks for trying to help -- I have been trying/repeating for 2 days.... I'll keep at it...
@HughB started
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.
Do the boot without loading code. You may need to retry a few times as WebIDE sometimes fails.