I should also point out, there's no Webdirect or anything like that involved. It shows up in the FMP application.
Thank you for your posts.
What version of Adobe Reader do you have installed? Have you tried reinstalling Adobe Reader?
Does the PDF display in Microsoft Internet Explorer?
Do you recall if anything was added or removed from the system since this issue started?
It didn't work on two different Windows machines and one Mac that I tested it on, all with different versions of Adobe. I didn't try Explorer, though the exported file opened in Adobe no problem. I restarted the server and things seem to be working fine. Still not sure what happened.