Hi all, I got a new 5D Mark IV which I began using today. On the top LCD screen it displayed an error code 'err cr2d..' it flashed very quickly before disappearing and the main LCD screen was blank. The retailer is collecting the camera for a refund as they only have them available on a 5-7 day delivery now. Are there widespread issues with this model? I am opting for a 5D Mark III instead, simply because I have always thought the longer a model has been out the more likely it is to be fault free'. This episode kind of proved that to be true. I have one more question - the menu is dramatically different from what I came from (6D, upgrading for several reasons - build quality for one) and I began noticing things like 'Electronic lens MF' which isn't mentioned in the manual. I began thinking whether this error may have been to do with this feature and I may not have set up the camera to lens correctly. Or is there something else I am not considering?