What kind of file formats are you using? Are they individual images, or an image sequence?
Jpeg, individual images, RGB.
All in one folder, or separate? All unique names?
If you're comfortable uploading some of the ones giving you problems, I'd be happy to see if they're troublesome on my system.
All in one folder with their respective numbers ie 'filename_87', 'filename_88' etc.
I'll PM you some of the problematic images, thank you.
For some reason, OP's jpgs were displaying correctly in file browser, but referencing wrong image when imported into PrPro or AE. Ps displayed them correctly.
Converted a few of OP's test images to png, worked fine.