All of a sudden I can't import any photos from my camera. The thumbnails show up, I select a photo, it says it's importing the photo and freezes there. I can click to cancel the operation and I can close LR but I have to force quit, then it sends a report. Worked fine a few weeks ago when I last used it.
Not sure if this is related to my issue, but I tried putting my card in a card reader, but the reader doesn't show up on my computer at all---it's old, but I know the reader worked on my daughter's pc recently.
If the operating system doesn't see the card reader, then you'd need to fix that and probably your import problem will go away.
The only work around is to launch Image Capture after connecting your camera or card reader. If the device is recognized in the IC app you should be able to get the photo files into a folder on to your Mac. Then get them into Lightroom using:
Import >> Add