Error when saving to flash

Argh! Happened to me again. Apparently reset() doesn't stop the bluetooth services after all.

>reset()
=undefined
BLE Connected, so queueing service update for later
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v90.12 Copyright 2016 G.Williams
>BLE Connected, so queueing service update for later
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v90.12 Copyright 2016 G.Williams
>
=undefined
>save()
=undefined
BLE Connected, so queueing service update for later
Erasing Flash...
Disconnected