I have a problem that is nearly the same, it shows me all my pictures are defective but they work fine in photoshop CC 2017.
Adobe Lightroom 
1 person found this helpful
My problem was solved by creating a new catalogue and importin the pictures from the old catalogue
I had the same folder on two different hard drives.. when I accessed only one, and deleted the other.. it solved the problem. It seems in this case that is what cased the rejects...
Maybe because I have import set up to not import duplicates.. so even if the duplicates both resided on two different hard drives with different folder names - they still had the same file name. I have never seen this problem before.