Here are the steps.
All done in Photoshop
1. Connect D800 to USB.
2. Launch Photoshop CC
3. File>Open
4. Browse to D800 and select folder on drive, then select JPEG image
5. Browse screen closes and screen remains blank.
FYI - Same issue for RAW as well.
When I do the same process with CS6 and ever version before it opens the image.