Hey there. I have been trying to install a certain plug-in for Firefox, so I can watch a video which is featured on a website. It's called the '''DivX Web Player''' plug-in. Each time I click on the play button, the video screen changes to grey with text that says: ''A plug-in is needed to display this content. Install plugin...'' I have clicked on the installation link and have run through the installation steps several times now. Each time I restart Firefox and return to the website, the same message is displayed. I have also made sure that my Firefox is up-to-date; version 9.0.1. I'm running Firefox on Windows 7. If anyone has any solutions that I can try, that would be appreciated. Also, I have searched through the help topics, but have found nothing of use.