If you go to Photoshop > About Plugins > Camera Raw, what version number does it say?
And what make and model is your camera?
The Camera Raw version is 18.104.22.1681 and I am using a Nikon D5.
The D5 requires Camera raw 9.5, which is not available for CS6 - 9.1.1 is the latest and final version.
You can either subscribe to Photoshop CC, which will open the files (the Photography plan with Photoshop and Lightroom is $10 a month), or you can use the free Adobe DNG converter to convert the raw files to DNG files that can be opened in 9.1.1/CS6.
Great, thanks for the help!
The Nikon D5 needs camera raw 9.5 which is not compatible with CS6
You will need to download the DNG convertor and convert the files to DNG prior to opening in ACR9.1.1
Edit : Per Bernsten has given you the correct answer whilst I was typing