Rails 3.2.8 Application.js and Application.css are not working as expcted

Rails 3.2.8 Application.js and Application.css are not working as expcted

When i try to include
<%= stylesheet_link_tag "application" %>
<%= javascript_include_tag "application" %>
The content of the files of the application.css is:
/*
* This is a manifest file that'll be compiled into application.css, which
will include all the files
* listed below.
*
* Any CSS and SCSS file within this directory, lib/assets/stylesheets,
vendor/assets/stylesheets,
* or vendor/assets/stylesheets of plugins, if any, can be referenced here
using a relative path.
*
* You're free to add application-wide styles to this file and they'll
appear at the top of the
* compiled file, but it's generally better to create a new file per style
scope.
*
*= require_self
*= require social_stream
*= require_tree .
*/
And the content of application.js file is
// This is a manifest file that'll be compiled into application.js, which
will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory,
lib/assets/javascripts, vendor/assets/javascripts,
// or vendor/assets/javascripts of plugins, if any, can be referenced here
using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll
appear at the bottom of the
// the compiled file.
//
// WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED,
ANY BLANK LINE SHOULD
// GO AFTER THE REQUIRES BELOW.
//
//= require jquery
//= require jquery_ujs
//= require social_stream-base
//= require social_stream-documents
//= require social_stream-events
//= require social_stream-linkser
//= require social_stream-presence
//= require social_stream-oauth2_server
//= require_tree .
my rails app is not including the css and js files those are required in
the above snippet. but when i update the include tags to the specific file
those are included fine. i.e.
<%= stylesheet_link_tag "socail_stream" %>
<%= javascript_include_tag "jquery" %>
What i think there is issue of sprockets its not working as expected
please advice.
I will be really thankful to you.