Can you start a new thread for your problem, as we're trying to sort out an issue with the Espruino KickStarter board here.
In your case I'd be 90% sure that your problems will be fixed by just trying the other USB port on your board (there is no flow control on the standard serial port, and as Espruino sends more characters back than it receives, after some time it will run out of buffer space).
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.
Hi user6065,
Can you start a new thread for your problem, as we're trying to sort out an issue with the Espruino KickStarter board here.
In your case I'd be 90% sure that your problems will be fixed by just trying the other USB port on your board (there is no flow control on the standard serial port, and as Espruino sends more characters back than it receives, after some time it will run out of buffer space).