I reinstalled photoshop - no good
it says i have the latest Camera Raw CC
I have no clue how to address the problem
Immediately after installing Jan2018 Photoshop, I could not open any Nikon raw files.
Photoshop simply crashed and needed re-starting.
A reset of the Preferences fixed the problem for me.
Try this :
Start Photoshop . Go to Preferences >Camera Raw and uncheck "Use Graphics Processor". Now try and open the raw file.