Happened a lot on a corporate video shoot over the last few days running 3.2.19. Tried multiple cards and batteries. Heat wasn't an issue at all. I've sent in the logs. Kind of embarrassing when going over the footage with the client. I am seriously considering other camera options going forward if I can't get a final fix as I expect a little more from a professional camera. It's been headaches since the start and I just want something that works and that I can depend on.