Attachments within PDF appearing for some users, but not for others
I have a PDF document that I have created that has about 10 other PDFs and 4 word documents attached to it. I have sent it to approximately 200 people so far and about 20% can't view the attachments. The attachments don't appear in the attachments panel - it appears to be empty/blank.
Our troubleshooting so far has included downloading the PDF again, installing the latest version of Reader, re-starting their computer. Happens on both Windows and Mac. The screenshots they have sent me have been of a PDF document with an empty attachments panel.
Does anyone know what's going wrong? Everything's working fine for about 80% of users.