can be a coincident, though it is strange but here i am also facing this type of problem on my ios device

Hi, I am having some issues with the software. I am using an iMac 27in (OS 10.12.3) Photoshop/lightroom CC 2017 When I am exporting from helicon focus back to lightroom (DNG file) the files are visible in lightroom, and look ok, but lightroom says "image appears to be damaged". I was wond...