If you can reproduce this error, can you connect with the Web IDE, and then try it again? You might an error message is produces that helps us
@Gordon 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.
If you can reproduce this error, can you connect with the Web IDE, and then try it again? You might an error message is produces that helps us