That's really interesting - it could be related to some other problems people have been having with saving to flash.
Have you tried removing the battery from your puck and re-inserting it to power cycle it? It could be that the software has got into a strange state.
@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.
That's really interesting - it could be related to some other problems people have been having with saving to flash.
Have you tried removing the battery from your puck and re-inserting it to power cycle it? It could be that the software has got into a strange state.