Redmine

http://www.redmine.org/wiki/redmine/Plugins
按这里的方法安装，出现如下错误：
use this page ,some err happed:

ruby /var/www/redmine/script/server -e production

from /var/www/redmine/vendor/plugins/engines/lib/engines/rails_extensions/migrations.rb:131:in `included'
        from /var/www/redmine/vendor/plugins/engines/lib/engines/rails_extensions/migrations.rb:131:in `class_eval'
        from /var/www/redmine/vendor/plugins/engines/lib/engines/rails_extensions/migrations.rb:131:in `included'
        from /var/www/redmine/vendor/plugins/engines/lib/engines/rails_extensions/migrations.rb:155:in `include'
        from /var/www/redmine/vendor/plugins/engines/lib/engines/rails_extensions/migrations.rb:155
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:355:in `new_constants_in'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
        from /var/www/redmine/config/../vendor/plugins/engines/lib/engines.rb:94:in `load_extensions'
        from /var/www/redmine/config/../vendor/plugins/engines/lib/engines.rb:94:in `each'
        from /var/www/redmine/config/../vendor/plugins/engines/lib/engines.rb:94:in `load_extensions'
        from /var/www/redmine/config/../vendor/plugins/engines/lib/engines.rb:85:in `init'
        from /var/www/redmine/vendor/plugins/engines/init.rb:1:in `evaluate_init_rb'
        from /var/www/redmine/vendor/rails/railties/lib/rails/plugin.rb:95:in `evaluate_init_rb'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
        from /var/www/redmine/vendor/rails/railties/lib/rails/plugin.rb:91:in `evaluate_init_rb'
        from /var/www/redmine/vendor/rails/railties/lib/rails/plugin.rb:44:in `load'
        from /var/www/redmine/config/../vendor/plugins/engines/lib/engines/plugin.rb:77:in `load'
        from /var/www/redmine/vendor/rails/railties/lib/rails/plugin/loader.rb:33:in `load_plugins'
        from /var/www/redmine/vendor/rails/railties/lib/rails/plugin/loader.rb:32:in `each'
        from /var/www/redmine/vendor/rails/railties/lib/rails/plugin/loader.rb:32:in `load_plugins'
        from /var/www/redmine/vendor/rails/railties/lib/initializer.rb:292:in `load_plugins'
        from /var/www/redmine/vendor/rails/railties/lib/initializer.rb:142:in `process'
        from /var/www/redmine/vendor/rails/railties/lib/initializer.rb:97:in `send'
        from /var/www/redmine/vendor/rails/railties/lib/initializer.rb:97:in `run'
        from /var/www/redmine/config/environment.rb:20
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:355:in `new_constants_in'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
        from /var/www/redmine/vendor/rails/railties/lib/commands/servers/webrick.rb:59
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:355:in `new_constants_in'
        from /var/www/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:510:in `require'
        from /var/www/redmine/vendor/rails/railties/lib/commands/server.rb:39
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/local/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from /var/www/redmine/script/server:3

rake db:migrate_plugins RAILS_ENV=production
(in /var/www/redmine)
rake aborted!
undefined method `initialize_schema_information' for module `ActiveRecord::ConnectionAdapters::SchemaStatements'

(See full trace by running task with --trace)