I just downloaded the new test camera raw 8.7 but still can download my raw files from my d750?
Is it definitely installed? Ctrl-K in Camera Raw and read the version from the top of the pop-up box.
If so, maybe you're uploading with an old Nikon Transfer? You need to use a different downloader, or upgrade Nikon Transfer to the latest by updating View/CaptureNX.
(if you have a bunch of corrupted NEFs from using an old copy of Nikon Transfer, you can fix them with this: Fix Corrupted Nikon NEF Images)
Other than that, I'm clueless.
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