I received a disk from a client with InDesign files that I opened a few days ago, saved out as PDF's and were fine. Opened in Illustrator, everything looking vector and good. Today I went to open the same InDesign files and now they're asking for links, which I don't have as I never received any from the client. Is it possible for a link to be embedded and then spontaneously a few days later "not" embedded?
Did you save everything from that disk to the hard drive, or are you still opeing the file from the client disk?
Files are probably on disk.
Why are you opening the PDF in Illustrator? Illustrator is not a multi-purpose pdf editor or viewer.
I don't recommend you open PDFs in Illustrator.