I recently flew my spark and encountered MULTIPLE compass interference where I lost my gps. I however got a new alert saying motor overload; contact dji support. What is a motor overload and what causes it? And DJI ELEKTRA do I need to send it in for repair?

Hi, please try to flash your firmware of spark with DJI Assistant 2. If the problem remains, I would recommend you send it back for repair: http://www.dji.com/support

motor overload can be caused by flying in the wind or after a crash

Is it a problem that happens only atm or does it persist even after that flight session?