Lightroom Classic suddenly crashing after interrupted import (Mac)

Hi everyone, 
I’ve been using Lightroom Classic daily for about 6 months with no issues, but it suddenly broke after a normal import from an external hard drive. The import didn’t complete, I closed my Mac, and since then Lightroom has been unusable.

Current behavior:

• Lightroom Classic opens, but:

  • freezes/spins when I click Import, or

  • hangs during startup (catalog / plugin loading)

  • When I have ligthroom open the activity monitor says (Not responding) 

• Sometimes it opens, but any mouse click causes the beachball.

What I’ve tried: 

• Reinstalled Lightroom Classic twice

• Deleted catalogs, backups, plugins, and cache

• Created brand-new catalogs

• Reset preferences

• Disabled GPU acceleration

• Gave Lightroom Full Disk Access

• Restarted multiple times

• Tested with no external drives and with a single JPEG from the internal drive

Still no change.

System:

• Macbook pro 14 macOS Tahoe 26.2

• Lightroom Classic 15.1.1

Has anyone seen this or know a fix?
Thanks.