Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)

ruby-talk
1

Hi all

i have installed rails 2.3.8 in my machine. after the installation when
i create a new project it gives the error "uninitialized constant
ActiveSupport::Dependencies::Mutex (NameError)".

can any one please help i am new to apple mac os x.
my os version is mac 10.6.3

This is the error :

rajeshs-macbook:Desktop rajesh$ ruby --version
ruby 1.8.7 (2009-06-08 patchlevel 173) [universal-darwin10.0]

rajeshs-macbook:Desktop rajesh$ rails --version
Rails 2.3.8

rajeshs-macbook:Desktop rajesh$ rails demo

/Library/Ruby/Gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:55:
uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in
`gem_original_require'
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `require'
  from
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.8/lib/active_support.rb:57
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in
`gem_original_require'
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `require'
  from /Library/Ruby/Gems/1.8/gems/rails-2.3.8/lib/rails_generator.rb:31
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in
`gem_original_require'
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `require'
  from /Library/Ruby/Gems/1.8/gems/rails-2.3.8/bin/rails:15
  from /usr/bin/rails:19:in `load'
  from /usr/bin/rails:19

Thanks all
Rajesh

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http://www.ruby-forum.com/topic/1193619

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require 'thread' to their applications."

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