What steps will reproduce the problem? 1. Click the closureinspector09.xpi link http://closure-inspector.googlecode.com/files/closureinspector09.xpi 2. Firefox asks to save the file. 3. It should ask to install it.

What is the expected output? What do you see instead? FIrefox's add-on install window should appear.

What version of the product are you using? On what operating system? Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 GTB6

Please provide any additional information below. n/a