Since the recent update I am unable to read DNG files generated by Adobe Canon Raw Files app in Photoshop.
I can open DNG files from Canon .CR2 files so I don't think it's a problem with Photoshop. Can you tell us which version of ACR you are using.
It should be version 10.2.1.895, version 10.2 has a bug.
Adobe says that is a known issue and has a workaround until a fix is released.
Camera Raw cannot open its own DNG file
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