So I made a portfolio on my workstation with two pdf files.
In one of the portfolio files I added a file attachment by Opening File>Comment>Attach File.
Saved file and saved portfolio.
Open in Reader X on my workstation - no problems - selecting paperclip opens attached file.
However, when I save to my tablet and open portfolio and file I see the paperclip icon but attachment doesn't open on click.
Any idea why? Do I need make portfolio in Adobe Acrobat Pro X rather than 9 to make this work.
Recent announcement for Reader X says this should work - in fact has been out since 10.1.1: "Enhancements to Portfolios list and File Attachments on iOS: You can now view non-PDF children in PDF portfolios, and PDF File attachments on the iOS Reader. These capabilities already exist on Android since Reader 10.1.1"