MPB-Ldn

I've had a very similar problem, same blinking light after taking a still image & unable to view the image/write image to card etc I've always used it tethered in studio & forgot that I changed a connection setting in the setup menu when I first got the camera, basically Setup > Connection setting > connection mode > & select as needed, switching from Tether Shooting Fixed to Tether shooting Auto, sorted it for me & thankfully no need to return as faulty etc