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mikej4252593
Inspiring
August 27, 2025
Question

Lightroom Classic 14.5 fails to open

  • August 27, 2025
  • 3 replies
  • 744 views

I have recently updated to Lightroom Classic version 15.5 and am having problems opening the app on my M3 Pro MacBook Pro, running MacOS 15.6.  When I first try to start a session it either fails to open and I have to force quit and try again, or takes a very long time to open.  When I do eventually get it to open if I close it down and reopen it does so with no problem. I have tried uninstalling reinstalling the app, but this makes no difference. 

3 replies

M
mikej4252593Author
Inspiring
August 27, 2025

Thanks.  I've updated to 14.5.1 and will see if that makes any difference.

M
mikej4252593Author
Inspiring
August 28, 2025

The update to 14.5.1 has not solved my problem.  Thus is so frustrating.  Every time I start a new session for that day Lightroom Classic refuses to open and I have to Force Quit the app.  Having done that, when I next click to open the app everything is fine.  This doesn't seem to make any sense.

Rag and Bone
Community Expert
Rag and BoneCommunity Expert
Community Expert
August 28, 2025

Once LR is running, try disabling the plugins. I had some issues with the Logi plugin for a while.

 

Failing that, have you tried uninstalling, followed by a re-install?

Srishti_Bali
Srishti_Bali
Legend
August 27, 2025

Hi @mikej4252593

 

Sorry to hear you’re running into this issue after updating. Could you please share your system info (you can copy-paste it from Lightroom: Help > System Info) and let us know if you see any error messages when it fails to open?

 

I would also suggest trying the steps in this troubleshooting guide, which covers common crash or freeze issues: https://adobe.ly/3JCUDGq

 

Let us know how it goes!

 

Regards,

Srishti

M
mikej4252593Author
Inspiring
August 27, 2025
Hi Srishti

None of the steps in the troubleshooting guide seem appropriate as they all assume that Lightroom Classic is running, whereas my issue is getting it to open.

My system info is as follows. Hope this helps

Regards
Mike


Lightroom Classic version: 14.5 [ 202508061311-4cef2162 ]
License: Creative Cloud
Language setting: en-FR
Operating system: Mac OS 15
Version: 15.6.0 [24G84]
Application architecture: arm64
Logical processor count: 12
Processor speed: NA
SqLite Version: 3.36.0
Power Source: Plugged In, 87%
Built-in memory: 36 864,0 MB
Dedicated GPU memory used by Lightroom: 16 784,8MB / 27 648,0MB (60%)
Real memory available to Lightroom: 36 864,0 MB
Real memory used by Lightroom: 5 145,5 MB (13,9%)
Virtual memory used by Lightroom: 435 093,0 MB
Memory cache size: 860,4MB
Internal Camera Raw version: 17.5 [ 2318 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 1638MB / 18431MB (8%)
Camera Raw real memory: 1670MB / 36864MB (4%)

Cache1:
Final1- RAM:141,0MB, VRAM:0,0MB, Hong Kong-7.CR2
Final2- RAM:1 186,0MB, VRAM:9 758,0MB, Hong Kong-8.CR2
NT- RAM:1 327,0MB, VRAM:9 758,0MB, Combined:11 085,0MB

Cache2:
m:860,4MB, n:282,4MB

U-main: 153,0MB

Standard Preview Size: 3456 pixels
Displays: 1) 3456x2234

Graphics Processor Info:
Metal: Apple M3 Pro
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: ON
GPU for Preview Generation: Auto (S5_27)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/Photographs/Mike_2025/Mike_2025.lrcat
Settings Folder: /Users/michaeljacobs/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Canon Print Studio Pro
3) Logi Plugin
4) ON1 Photo RAW 2025
5) Topaz Photo AI

Config.lua flags:
DdeGannes
Community Expert
DdeGannesCommunity Expert
Community Expert
August 27, 2025

There has been an update to LrC 14.5 to version 14.5.1 that has several bug fixes.

See the following.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.0.1, PS 27.0; ) Camera Oly OM-D E-M1.
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