Denoise incompatible with photo format

[Maggi Korecki]

Hello, can someone help me here? 
I've been having problems with the denoising of the 
images for a few days. LR says denoise is currently incompatible with the photo format. 
I didn't change anything in the format. As always, I edit the images in RAW. 
I'm working on a new macbook,
 have the latest version... haven't changed anything in LR. I can't explain it. 
I would be grateful for every tip. 

Many kind regards, 
Maggi

[John R Ellis]

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There was another recent report about this error on Mac. Next troubleshooting steps:

1. Triple-check you're actually editing a raw file by looking at its file name in the Metadata panel:

LR's user interface makes it pretty easy to think you're editing a raw when you're not, for some accidental reason.

2. Verify you haven't selected one of the reduced-resolution raw formats in your camera (which won't work with Denoise). Look at the pixel dimensions in the Metadata panel and verify they're the full size produced by your camera.

3. Do the LR menu command Help > System Info and copy/paste the entire contents here so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.