I just moved LR6 from one computer to another. Now, when I try to import files I get the following, "The following files were not imported because they could not be read. How do I fix this?
This error message is usually due to your copying the raw files to a "destination folder" in the import dialog for which you do not have read and write privileges. Use the options in your operating system to correct the permissions or choose an alternative destination in the import dialog (right side panel).
Also, you can try and change the destination folder to any other location.
Note: If you only want to add files from the external hard drive, then select "Add" from the top on the import screen.