After I have installed Windows 10 import via USB direct from Camera does not work. LR reports no files and shows no files on the cameras cards. Everything worked all right in Windows 8.1.
If I instead use Nikons import application it works ok with the same destination on the hard drive.
In the Import dialog box on the right there should be a Destination section. Please make sure this section is present and expanded.
Checked today. This is now fixed in one of the recent (this week)'s windows updates. Just do a Windows Update, restart your PC as prompted to ensure installation, and try again. You will see that the issue has now gone away. It was not Lightroom it was an Windows bug.