Are you importing any movie files along wit those jpegs?
Please check the article for images showing black : Thumbnails are black in Lightroom CC 2015.2/6.2
Also please perform the following steps :
- Go to Lightroom > Preferences.
- Click on the General tab
- Uncheck “Show ‘Add Photos’ Screen”Restart Lightroom
- Also please Go to the Preferences > Performance Tab, and uncheck "Use Graphics Processor "
- Restart Lightroom and see if it works.
Yes. There were some video files that were on the SD card. I did not de-select them.
I went ahead and reverted to an earlier version of lightroom. That one works and I have been able to get the work photos processed. Guess I'll stay with the earlier version until Adobe gets their problems with the current version sorted out.