I have been using this great plugin for a couple of months now.
After the latest update, users have started to complaint about being unable to see the embedded documents if they use IE.
Firefox and Chrome work fine. The problem is only IE (why I am not surprised?)
This is a specific link for one of the files: http://linafacr.com/2009/08/16/juegos-nacionales-alajuela-2009-tabla-de-posiciones/