I'm having the same problem as Felicity. I've created links to PDFs via a trigger on a button in my Storyline file (as opposed to attaching them to the 'resources' tab) because the client wanted to ensure that, as far as possible, the learners read each PDF before moving on. So I have also created a condition that the button must have been 'visited' before the user can move on.
However, no matter where I place the PDFs (on my desktop or my C drive) the link doesn't work on the published file. The 'hand' icon appears when you click on the button, but nothing happens. The PDFs are in the 'external files' folder in the output folder.
When I go back to check the link, occasionally, and randomly, it changes.
I really need to send the live files to the client for review, and I'd like to be able to do so with the link working.
Thanks for any help