Javascripts Controller Not working.

I am trying to make a javascripts controller work. The only resource I
can find on this is here : http://railscasts.com/episodes/88

I have tried everything in the tutorial and the comments including May
22 08 comment by "pi_p master" for respond_to do format etc. and here
is my predicament; my application works on my development machine just
fine; when I transport the application to my production environment it
does not call the javascripts controller; I have the following error :
<script type="text/javascript" src="/javascripts/dynamic_units.js">
1<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
2<html><head>
3<title>404 Not Found</title>
4</head><body>
5<h1>Not Found</h1>
6<p>The requested URL /javascripts/dynamic_units.js was not found on
this server.</p>
7</body></html>

Now I have even tried putting in explicitly map.connect
':controller/:action.:format'

as well as :
map.js '/javascripts/
dynamic_units.js' , :controller=>'javascripts', :action
=>'dynamic_units'

and whatever permutation I could fathom but to no avail.

I know the dynamic_units method in javascripts_controller is not
called because the logger never outputs any lines.