Redmine

When trying to install any number of plugins, but specifically (exclusively, not simultaneously) Redmine Sprints, Redmine Charts, or Redmine Scumdashboard, I am unable to successfully run db:migrate_plugins and receive the "Child already added" error. The output of a trace, my versions, and my other plugins are all listed below. I don't see anything in production.log.

I have read the suggestions in this thread and it did not resolve my issue.

Any help that can be provided would be of great assistance. If more info is required, I am happy to supply.

Thank you!
Aaron

output of "rake db:migrate_plugins RAILS_ENV=production --trace"

(in /var/www/redmine-0.9.4)
** Invoke db:migrate_plugins (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
Child already added
/var/www/redmine-0.9.4/lib/redmine/menu_manager.rb:53:in `add_at'
/var/www/redmine-0.9.4/lib/redmine/menu_manager.rb:365:in `push'
/var/www/redmine-0.9.4/vendor/plugins/redmine_sprints/init.rb:27:in `evaluate_init_rb'
/var/www/redmine-0.9.4/lib/redmine/menu_manager.rb:303:in `map'
/var/www/redmine-0.9.4/vendor/plugins/redmine_sprints/init.rb:26:in `evaluate_init_rb'
/var/www/redmine-0.9.4/lib/redmine/plugin.rb:67:in `instance_eval'
/var/www/redmine-0.9.4/lib/redmine/plugin.rb:67:in `register'
/var/www/redmine-0.9.4/vendor/plugins/redmine_sprints/init.rb:13:in `evaluate_init_rb'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/rails/plugin.rb:158:in `evaluate_init_rb'
/var/www/redmine-0.9.4/vendor/rails/activesupport/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/rails/plugin.rb:154:in `evaluate_init_rb'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/rails/plugin.rb:48:in `load'
/var/www/redmine-0.9.4/config/../vendor/plugins/engines/lib/engines/plugin.rb:44:in `load'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/rails/plugin/loader.rb:38:in `load_plugins'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/rails/plugin/loader.rb:37:in `each'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/rails/plugin/loader.rb:37:in `load_plugins'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/initializer.rb:369:in `load_plugins'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/initializer.rb:165:in `process'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
/var/www/redmine-0.9.4/config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
/var/www/redmine-0.9.4/config/environment.rb:20
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/var/www/redmine-0.9.4/vendor/rails/activesupport/lib/active_support/dependencies.rb:158:in `require'
/var/www/redmine-0.9.4/vendor/rails/railties/lib/tasks/misc.rake:4
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequisites'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequisites'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31
/usr/bin/rake:19:in `load'
/usr/bin/rake:19

Versions:

CentOS 5
Redmine 0.9.4
rack 1.0.1
rails 2.3.5
rake 0.8.7
ruby 1.8.6

Other Plugins installed:

acts_as_activity_provider
acts_as_attachable
acts_as_customizable
acts_as_event
acts_as_list
acts_as_searchable
acts_as_tree
acts_as_versioned
acts_as_watchable
attachment_fu
awesome_nested_set
classic_pagination
coderay-0.7.6.227
engines
gravatar
open_flash_chart
open_id_authentication
prepend_engine_views
redmine_graphs
redmine_quips
redmine_sprints
redmine_whining
rfpdf
ruby-net-ldap-0.0.4