AI Denoise 13.5.1 in Lightroom not working

[Alex and Amy]

I was able to use the AI Denoise feature on several pics. Today, I have selected a group of 19 pictures to denoise. It doesn't complete the process with any of them. Did the same process with just one photo. I select a picture, click the denoise option, look at the before and after comparison, select "enhance", and wait. The little wheel spins, indicating the process is running, and after a minute or two, I get a grey screen saying "No photo selected". I've updated my preferences to see if that helped.

Use Graphics processor: Auto to Custom checking Use GPU for image processing.

Camera Raw Cache Settings Maximum size: 5.0 GM to 9.0 GN

I've purged the cache in both Camera Raw Cache Settings and Video Cache settings.

Gave Full Disk access to Lightroom. Restarted Lightroom.

Enable HDR in Library: Off to On.

Restarted My computer.

Nothing seems to help.

Lightroom Classic version: 13.5.1 [ 202408271704-d15d09cd ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 15
Version: 15.0.1 [24A348]
Application architecture: arm64
Logical processor count: 8
Processor speed: NA
SqLite Version: 3.36.0
Built-in memory: 24,576.0 MB
Dedicated GPU memory used by Lightroom: 3,817.4MB / 16,384.0MB (23%)
Real memory available to Lightroom: 24,576.0 MB
Real memory used by Lightroom: 3,462.3 MB (14.0%)
Virtual memory used by Lightroom: 420,125.9 MB
Memory cache size: 3,211.5MB
Internal Camera Raw version: 16.5 [ 1954 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 1093MB / 12287MB (8%)
Camera Raw real memory: 1094MB / 24576MB (4%)

Cache1:
Final1- RAM:189.0MB, VRAM:0.0MB, 20240921-_DSC6843.NEF
NT- RAM:189.0MB, VRAM:0.0MB, Combined:189.0MB

Cache2:
m:3,211.5MB, n:579.4MB

U-main: 107.0MB

Standard Preview Size: 4480 pixels
Displays: 1) 4480x2520, 2) 1920x1080

Graphics Processor Info:
Metal: Apple M3
Init State: GPU for Export supported by default
User Preference: GPU for Image Processing Enabled
Enable HDR in Library: ON

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/Samsung T5/Original Files (do not delete)/Main LR Library/MAIN LR Library 24-07-15-v13.lrcat
Settings Folder: /Users/amyrobin/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr
4) Nikon Tether Plugin

Config.lua flags:

[moved from bugs to discussions according to the community rules - Mod.]

[johnrellis]

As a first step to narrow down the problem, select a problem raw and do Metadata > Save Metadata To File. Then upload the raw and its .xmp sidecar to Dropbox, Google Drive, or similar and post the sharing link here. We can see if this is an issue with your computer in particular or occurs on other computers.

[Alex and Amy]

Here is the Google Drive link. 

[GoldingD]

Not on a MAC, on a WINDOWS rig, I downloaded your sample, with the XMP, Imported it and ran AI Denoise without issue.

[Alex and Amy]

Thanks for that. Yet, it's not very helpful.

[johnrellis]

I was able to run Denoise on your image with my LR 13.5.1 / Mac OS 14.6.1.  This indicates that the issue is not with LR in general or the photo but rather something specific to your system. There have been a couple of other reports of graphics problems with LR on Apple Silicon machines and Mac OS 15, so I'm wondering if there's some kind of incompatibility between LR and Mac OS 15 graphics drivers.  You could roll back to Mac OS 14 (which Apple makes very painful) or wait until LR 14 arrives (most likely the next few days).