Lightroom Classic not importing all files
I noticed that my Lightroom catalog was missing photos that were in the folders I had imported. For instance, I have a folder with 73 files - 71 .dng files, one .mp4 movie, and one jpg, but only the one jpg file was imported; or another folder with 36 jpg files, but only one was imported. If I try to synchronize the folder with missing images, LR asks if I want to import the other 72 or 35 or 392 files, and then I get "Importing files..." but then "No photo or videos were found to import." I thought perhaps it was because they had been previously imported, so made a brand new Lightroom catalog, but the same thing happens. Copied the images to a new external disk in case something on that disk was flaky; exact same problem. Some folders are fine; others refuse to import no matter what I do.
I'm trying to catalog one enclosing folder with 71 subfolders, about 12,000 files (336 GB) mostly .dng and .mp4 files from a DJI drone.
Using MacOS Big Sur 11.6.2, Lightroom Classic 11.1 Build 202112022200-7fd1f998. The files are on external Western Digital 10-14 TB drives.
Thanks for your help!
