I imported my Nikon RAW NEF files into lightroom the other night and now when I go to view and work with them it says there are no files there? I can see the files in the folder on my computer (as well as put them in two drives) and it says there are no files in those folders either even though I can see that they are there on the drives. Why can't LR not see my Nikon NEF files now?
What operating system are you using?
What version of Lightroom?
What camera took the pictures?
Were you able to see the images when you imported them?