Denoise Problem in 14.3.1

Thank you for giving this your attention. Much appreciated. Unfortunate that there doesn't appear to be any posted solution or workarounds since Denoise is an indispensable tool, IMO. Especially frustrating since Raw Details and Super Resolution both are working just fine in 14.3.1.

Unfortunately, there have been many, many reports about Denoise "Uknown error", most of which don't have posted solutions or workarounds. The few that do don't apply here, e.g. out-of-date graphics drivers. It's unfortunate that LR doesn't log more details about the "unknown" error -- it has those details but the programmers weren't motivated to record them.

Lightroom Classic version: 14.3.1 [ 202505061331-b063faef ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 15
Version: 15.4.1 [24E263]
Application architecture: arm64
Logical processor count: 10
Processor speed: NA
SqLite Version: 3.36.0
Power Source: Plugged In, 80%
Built-in memory: 16,384.0 MB
Dedicated GPU memory used by Lightroom: 3,304.6MB / 10,922.6MB (30%)
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 2,924.9 MB (17.8%)
Virtual memory used by Lightroom: 422,947.7 MB
Memory cache size: 1,383.8MB
Internal Camera Raw version: 17.3.1 [ 2227 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 613MB / 8191MB (7%)
Camera Raw real memory: 721MB / 16384MB (4%)

Cache1:
Final1- RAM:328.0MB, VRAM:1,799.0MB, P1000813.dng
NT- RAM:328.0MB, VRAM:1,799.0MB, Combined:2,127.0MB

Cache2:
m:1,383.8MB, n:125.2MB

U-main: 151.0MB

Standard Preview Size: 1440 pixels
Displays: 1) 3840x2160

Graphics Processor Info:
Metal: Apple M1 Pro
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: ON

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/Lightroom/Lightroom Catalog-v13-4.lrcat
Settings Folder: /Users/edhealy/Library/Application Support/Adobe/Lightroom

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

Config.lua flags:

Please 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.