What is the exact message that you get while importing?
Also ensure Read/write permissions on the external drive.
thank you, I have no message, I can not change the target direction to the extern hard drive after I have change Import Files.
Does Lightroom freezes when you try changing the destination?
Also what is the current destination set to ?
lightroom seems to work with another card reader, the card reader malfunctionning is called "transcend ts-rdf2 c fast card reader".
Thanks so much for your help, the problem is apparently a transcend problem and not an Adobe one...
Lightroom can import the pictures with another card reader, if I start Lightroom once again. The Cfast Cardreader do not work, thank you.