Inline install not working, why?

Hello, i create addon. I get code inline installing from https://developer.mozilla.org/en-US/docs/Installing_Extensions_and_Themes_From_Web_Pages and generate hash sha1 but mozilla write: firefox block install, allow(in button)? If i do it in my local computer all good, if in site this not working. Help me please!
script: http://googlewordpad.info/moz/scr.txt
site: http://googlewordpad.info/moz/in.php (no ad!)

It’s working for me after I click on the Allow button (except the file is a 404). The warning will always show up because the website is not on the default installation whitelist, where only a couple of Mozilla sites are included.