I keep getting a "no rendered photo exists on disk error when exporting as dng files LightroomCC 2015.7 release with Camera raw 9.7. This ONLY happens with files taken with my Canon 5D mark IV body with log. Not with files from my other Canon 5D Mark IV body.
There are no ! points by there images. I can open them and edit them. I can export them as psd but I cannot export them as dng. Why is this happening?
Sorry that you're having trouble exporting images as DNG from Lightroom CC 2015.7. Could you please take a look at this discussion Lightroom 5.3 export error "no rendered photo exists on disk" and try the suggestions mentioned?
Also, you are using Lightroom 2015.7 version of Lightroom which is not the latest version. Please update to Lightroom Classic CC from the Creative Cloud desktop app. Refer Keeping Lightroom Up-to-Date
Let us know how it goes.