It's fixed in the latest builds now (it might take a few minutes to update).
Turned out to be a bit of a nightmare - it was the Nordic code complaining, as it wants to make sure it doesn't turn the radio on while using flash memory - I guess because it draws too much power.
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.
It's fixed in the latest builds now (it might take a few minutes to update).
Turned out to be a bit of a nightmare - it was the Nordic code complaining, as it wants to make sure it doesn't turn the radio on while using flash memory - I guess because it draws too much power.