Can not connect to FireFox/MozRepl on: 127.0.0.1:4242

Can not connect to FireFox/MozRepl on: 127.0.0.1:4242 - this is popular problem who used AutoIT and FF.au3 script.
MozRepl working in any version Mozilla (10,11,12,13)
You should choose Firefox (in left-up corner your screen) -View-Toolbars-Menu Bar
Then: Tools - MozRepl-Start
Enjoy!