Lightroom failing to upload images from camera
Hi there! I'm trying to upload images from my canon 5d miv camera (like I have done successfully a zillion times) but this time LR seems to be freezing the upload. I have the latest LR Classic update (9.2) and am working on iMac Catalina OS using a usb cable to upload images (as usual). When I open LR and select 'import' the images on my camera are all visible and selectable but when I click ok to 'import' LR seems to indefinitely remain at 'copying files...'
any clues as to what could be going on?
thanks!
I've attached a couple of screen shots to illustrate

