This error occurs prior to loading code to the puck, seems to be during the (standard) reset during the upload procedure - AFAIK there was some switch to "disable reset upon code upload" in the Web IDE...
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.
I'm not sure if this helps, but:
would happen if you did something like
global.reset=1
which setreset
to a number. It seems unlikely that you would have done that however