User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.3) Gecko/20100402 Namoroka/3.6.3 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9) Gecko/20100330 Lightning/1.0b1 Shredder/3.0.4 The install button is missing in the add-ons "Installs" section. To install another extension, one must go back to the "Extensions" section, where the button appears. Reproducible: Always Steps to Reproduce: 1.Select "Tools", "Add-ons", "Install" button. 2.Select the XPI file to install, "Open". 3.Select "Install Now". Actual Results: No "Install" button in next view. Expected Results: User should always see the buttons at the bottom regardless of screen or view. User may wish to install another add-on.