uninitialized constant Resque::Server in Rails 2.3.5 app

[adamjt]

Using resque 1.10.0 and resque-multiple-failure-backend 1.1.1

config/initializers/load_resque.rb:
require 'resque'

config/initializers/resque.rb:
require 'resque/failure/multiple_failure'
require 'resque/failure_server'
rails_root = ENV['RAILS_ROOT'] || File.dirname(FILE) + '/../..'
rails_env = ENV['RAILS_ENV'] || 'development'
resque_config = YAML.load_file(rails_root + '/config/resque.yml')
Resque.redis = resque_config[rails_env]

Loading server throws this error:
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:440:in load_missing_constant': uninitialized constant Resque::Server (NameError) from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:inconst_missing_not_from_s3_library'
from /Library/Ruby/Gems/1.8/gems/aws-s3-0.6.2/lib/aws/s3/extensions.rb:206:in const_missing' from /Library/Ruby/Gems/1.8/gems/resque-multiple-failure-backend-1.1.1/lib/resque/failure_server.rb:43 from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:ingem_original_require'
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in require' from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:inrequire'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in new_constants_in' from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:inrequire'
from /Users/adam/BatchRepo/flippy/config/initializers/load_resque.rb:3
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in load_without_new_constant_marking' from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:inload'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in new_constants_in' from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:inload'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:622:in load_application_initializers' from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:621:ineach'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:621:in load_application_initializers' from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:176:inprocess'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in send' from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:inrun'
from /Users/adam/BatchRepo/flippy/config/environment.rb:60
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in gem_original_require' from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:inrequire'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require' from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:innew_constants_in'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require' from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:84 from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:ingem_original_require'
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
from ./script/server:4

[azolotov]

It seems you didn't

require 'resque/server'