I am unable to import photos from CF card (or anywhere!). iMac. OS Mojave

[jessica eve]

I have been using LR on this Mac for years. 

Suddenly, I am unable to import photos. I see the card on my desktop and also can select it as an import option. But photos do not show up as thumbnails. And option to import (bottom right of LR) is greyed out. 

I cannot import from desktop or anywhere else, either. 

LR Classic 10.4

Mac OS Mojave 10.14.5

Thank you for your help! 

[GoldingD · Accepted solution]

On the CF card, even though show subfolders is selected, go down and select the correct folder.

On both, over on the right, open open Destination, make sure the destination is viable.

[jessica eve]

Thank you!