I am familiar with Lightroom and know my way around, but am not a "power user". I have a client who is experiencing an issue with importing from an SD card. The images are marked as "already imported", but they are not.
First the stats:
Late 2015 27" running Catalina 10.15.7 with plenty of storage space running Lightroom Classic 11.2.
Here's what I have tried:
trying different SD cards
formatting the SD cards, both in-camera and using Disk Utility
checking permissions on the SD card
checking Lightrooms "Files & Folders" access in "Security & Privacy" in System Preferences
import the same images from a folder on the desktop, which worked.
import the images into a new Catalog, which worked.
turning "Don't Import Suspected Duplicates" on and off
I have not tried:
uninstalling Lightroom (previous posts regarding this issue have suggested this does not make a difference)
upgrading macOS (didn't have time to do so on my visit)
Thank you in advance for any suggestions you may have.