Skip to main content
K
kampa4
Participant
May 12, 2025
Question

.ARW export issue on Mac M3 Pro resolved by disabling GPU acceleration

  • May 12, 2025
  • 2 replies
  • 196 views

Hi everyone,
I’m experiencing an issue with Lightroom Classic (latest version as of today) on macOS (MacBook Pro with M3 Pro chip).
When trying to export RAW files in .ARW format (Sony), I receive a generic error:

“An unknown error occurred”

The issue is resolved by completely disabling GPU acceleration in:

Preferences > Performance > Use GPU for display and/or export

Once the GPU is disabled, the export works fine, although performance in the Develop module is noticeably reduced.

System Info:

  • macOS Sonoma [insert exact version, e.g. 14.4.1]

  • MacBook Pro 14" with M3 Pro (Apple Silicon)

  • Lightroom Classic [insert exact version, e.g. 13.3]

  • RAW File format: Sony .ARW

Hopefully this helps identify and resolve the bug.
Thanks!

2 replies

Ian Lyons
Community Expert
Ian LyonsCommunity Expert
Community Expert
May 12, 2025

In addition to the information requested by @Aleke please post a copy of the Export dialog configuration. See attached screenshot for example of settings that are most useful when trying to reproduce your issue.

 

    A
    Community Manager
    AlekeCommunity Manager
    Community Manager
    May 12, 2025

    Hey @kampa4! Welcome to the community!

    Could you share a bit more about the issue you're experiencing? Specifically, what version of Lightroom Classic and Sonoma are you using?

    Is this happening with every .ARW file you export, or is it only affecting specific ones where you've used certain tools?

    If you could share a sample file with us, that would be super helpful. You can use Google Drive, WeTransfer, or another file-sharing platform to send it over.

    Thanks a bunch!

    Alek

    *(If you mention me with an @, like @Aleke, I’ll get a notification and can respond faster.)*
    Terms & ConditionsAccessibility statement
    Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices