I am trying to import my .NEF files into Lightroom and keep getting a message that pops up stating "The files are not recognized by the raw format support in Lightroom.". I have never had a problem importing .NEF files before. Does anyone know why I keep getting this message? Help, please and thank you!
Either the NEF files are from a camera newer than your LR version – each camera must be supported explicitly, OR your NEFs have been corrupted by using new camera NEFs with older Nikon software.
So either upgrade your LR to a new version or stop using obsolete Nikon software with your NEFs. You can use the following utility to fix the corrupted caused by obsolete Nikon software:
Which camera, and which version of Lightroom?