title: firefox addon installation issue
body: <p>After worked on many small addon i want to put those add on on my server so that people can download it and use it so that i can get the feedback from the people ..but when i am downloading it from my server(it is a xpi file) getting following error..</p>
  
  <pre><code>Firefox could not install the file at 
  
  http://abhimanyu.homeunix.com/Work/abhiman_2k5@yahoo.com.xpi
  
  because: Install script not found
  -204
  </code></pre>
  
  <p>but when i m putting these files manually in the path it works fine..After fiddling many hours couldn't figure it out whats the problem ...please help me. </p>