problem on running the server

hi all,

         an application that was written in ror is running in my off and
i have to set it up in my local machine for some enhancement work.after
setting it up in my local machine i started the server but its showing
error like this :-

=> Booting WEBrick...
./script/../config/../vendor/rails/railties/lib/commands/servers/webrick.rb:12:
warning: already initialized constant OPTIONS
/usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require': no such file to load -- ferret
(MissingSourceFile)
        from /usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from
./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in
`require'
        from
./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in
`new_constants_in'
        from
./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in
`require'
        from
./script/../config/../vendor/plugins/acts_as_ferret/lib/acts_as_ferret.rb:24
        from /usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
        from /usr/lib/ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from
./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in
`require'
         ... 23 levels...
        from
./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in
`require'
        from
./script/../config/../vendor/rails/railties/lib/commands/server.rb:39
        from script/server:3:in `require'
        from script/server:3

           guys who knows whats the problem please help me.

Hi
  Check if a rails application already running on your machine..Also
check you specified the correct adapter in config/database.yml

Sijo

`gem_original_require': no such file to load -- ferret
(MissingSourceFile)

Looks like your missing Ferret.

Cheers,
Jan