I had actually already disabled that, but was continuing to have a problem (sorry for not making that clear).
From what you’re saying here, though, it seems that it’s the location of the PDF’s that’s the problem. Some of the PDF’s contain proprietary information and thus are kept in a space accessible only from within our network. That sounds like a deal breaker for this particular site.
That said, I do like this plugin and will likely be using it on other, more open sites. Thanks for all your work, and for your quick response.