Error 70 message after Firmware 1.4 upgrade

I upgraded my R body today with firmware 1.4 and when I turned the body back on I get an Error 70 message. Saying to turn the camera on and off and replace the battery. None of these make a difference. I have tried reformatting the card in another camera and on my Mac and tried a different SD card. Nothing helps.

Anyone experienced the same issue?
Many thanks