Hope this is the right place to ask this question. I have made Firefox my default browser and am trying to install extensions/add-ons (Tools, Extensions, Get more extensions). Everytime I try to download/install an extension, I get a message just below the tool bar that says, "Software installation is currently disabled. Click Edit Options.. to enable it and try again." At the end of this line is a button labeled Edit Options. Clicking this button brings up the content tab in the options window of tools, but there is nothing there to enable software installation (or even disable it), just a checkbox about warning. I find nothing in the download tab either to enable downloads. Java and Java Script are both enabled. I've read Firefix's Help on extensions and find nothing that helps! Can anybody here help?