Not enough info. Why can't you import? What happens when you try? Are you trying to import direct from the camera or via card reader? How about if you transfer the files to your HD outside LR and then import from there? What OS?
I tether my camera to my Mac book, OS X. Lightroom recognizes the camera but just spins. "Finding files" After 30 minutes, none are found. Iphoto finds them and I can go through that ap to download them but I would rather use LR.