Macbook Air 2013, OS X 10.10.1, LR5
Card inserted in card reader, the preview images OK, but when I click "IMPORT", I get: "Some import operations were not performed. The following files were not imported because they could not be read"
Same images, same card and card reader import OK on my desktop (iMac 2013, OS X 10.10.1).
The message actually means that the files could not be written to the destination. You need to check the permissions and make sure they are right.
How do I check permissions?