Missing link message but no links are missing
When I receive files from a specific co-worker, I get a pop-up that tells me links or URLs are not accessible, but the little errors panel shows no errors and if I go into the links panel, nothing shows as missing there.

Furthermore, I am unable to export a pdf or even package the files at all. I get this message instead:

We are both running the latest version of InDesign and I have tried shutting down completely and re-starting. I am able to make an idml file, but all of the links unlink if I do so (like the normal way of unlinking where it shows up in the links panel). I end up having to go through and relink each one individually which is cumbersome as these files can have 200 links.
Has anyone else encountered this issue and do you have a fix for it?
