I recently purchased the Nikon D7200 and I took a few photos with it the other day. I ALWAYS shoot in RAW and upon trying to upload them, LR wouldn't recognize the files. I suspected that the software may need to be updated, so I did. Currently using 5.7 now and it still won't recognize them. Any ideas how to solve this problem? I don't see why there is an issue.
Lightroom 5.7 and 5.71 (the latest release) were both released prior to the introduction of the D7200. At this time there is no Adobe support for the camera. Nobody here in the forum knows when that support will be provided. Yes, it's unfair to you. But Adobe just recently released a new version of Camera Raw and the DNG converter, neither of which support the camera because it is too new. Support is forthcoming, but the only answer that counts is that you will have to wait and see when the support is provided.