i had the same thing happen to mine on Monday. it happened to me mid puff and it just died i thought oh **** it died. i put it down 5 minutes later it had the smae message and i have been vaping it ever since no problem. i hooked it to escribe when i got home and everything was ok. no problem at all. it could be the firmware because i had just done the update on the 08/21 update.