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michałz25761149
Participant
February 26, 2026
Question

Lightroom 15.2 crushes when using person ai mask.

  • February 26, 2026
  • 1 reply
  • 79 views

Hi,

I’m experiencing consistent crashes in Lightroom Classic when trying to use AI masking, specifically “Select People.”

System Information

  • Model: Mac Studio (Mac14,13)

  • Chip: Apple M2 Max

  • CPU: 12-core (8 performance, 4 efficiency)

  • RAM: 64 GB

  • System Firmware Version: 13822.81.10

  • macOS: 26.3

  • Lightroom Classic: 15.2
    (also tested with an older version — same behavior)

Problem Description

Lightroom Classic crashes immediately when I:

  • Open the Masking panel

  • Click “Select People”

The application closes without warning.

This happens:

  • In every catalog (including newly created ones)

  • With different images (RAW and others)

  • After restarting the computer

Troubleshooting Steps Already Taken

  • Disabled GPU acceleration in Performance settings (no change)

  • Tested multiple catalogs (including a new, clean one)

  • Reinstalled Lightroom (also tested an older version)

  • Restarted macOS

Crash log shows:

  • EXC_BAD_ACCESS (SIGSEGV)

  • References to AGX / IOGPU

  • Crash occurring in a worker thread during AI mask processing

It appears specifically related to the AI People segmentation model.

Has anyone experienced similar crashes with AI masking on Apple Silicon (M2 Max) under macOS 26.3?

Any insights would be appreciated.

    1 reply

    Sameer K
    Community Manager
    Sameer KCommunity Manager
    Community Manager
    February 26, 2026

    Hey, ​@michałz25761149. Welcome to the Lightroom Community. Thanks for the detailed post. Please share the system info from Lightroom Help > System info > Copy and paste into a text document > Upload and attach here.

    Please follow the two sets of steps and let me know how it goes: 

     

    1 - Close Lightroom

    2 - Go to the following locations and delete everything inside the ModelZoo folder.

    MacOS: /Library/Application Support/Adobe/CameraRaw/ModelZoo/

    MacOS: ~/Library/Application Support/Adobe/CameraRaw/ModelZoo/

    Note: Hold down the Option key in the Finder when using the Go menu. The library will appear below the current user's home directory. 

    3 - Launch Lightroom & try masking.

    4 - If this does not work, you can uninstall Lightroom from the Creative Cloud desktop app and start over from step 2, and install Lightroom Classic at step 3. 

     

    Let me know how it goes. Thanks!
    Sameer K

    (Type '@' and type my name to mention me when you reply)

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