Twitter-bootstrap-rails gem in windows 7 issue -

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i trying use twitter-bootstrail-rails gem style devise sign in pages , custom pages. have followed screencasts , included required gem (gem 'twitter-bootstrap-rails'

gem 'therubyracer', :platform => :ruby # gem 'therubyracer', '~> 0.10.2'#therubyracer gem 'libv8', '3.16.14.3'  gem 'less-rails')in gem file. on windows 7.

all gems installed installed when navigate http://localhost:3000/users/sign_up or page, getting error.kindly me resolve issue struck long time..

cannot load such file -- v8 (in c:/sites/konavsa/app/assets/stylesheets/bootstrap_and_overrides.css.less) extracted source (around line #6):

konavsa

<%= stylesheet_link_tag    "application", :media => "all" %> <%= javascript_include_tag "application" %> <%= csrf_meta_tags %> <meta name="viewport" content="width=device-width, initial-scale=1.0">

try this:

gem 'libv8', '~> 3.11.8.3', :platform => :ruby

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