Lightroom Classic Crashing seconds after start-up.

Hi Brian,

Thanks for reaching out. I'd love to help you figure this out if you can clarify a few things.

Where is the Lightroom Classic's catalog stored? On the internal drive or any of the external drives?

Crash logs refer to preview generation/creation. We can try to fix the previews, which could also be due to broken or damaged tables in the catalog database.

You can create a new test catalog and merge the existing one with the new one to avoid broken or damaged databases. Copy the primary catalog or the catalog in question and place it on your computer's desktop/internal drive.

• When launching Lightroom Classic, press the Alt (Win) or OPT (macOS).
• Choose the option to create a new catalog and create a new one on the internal drive.

• In the new catalog, head to File > Import from Another Catalog, as shown below.

Proceed with merging the corrupted catalog into the newly made, internal storage-based catalog. 

For more help via video-based steps, check here. See Merging individual catalogs into a master catalog. 

You are currently using macOS 11.6.1. You can check for updates and complete any pending updates. We hope to hear from you soon.

Thanks!

Sameer K