When attempting a migration I receive the following error: uninitialized constant Rails::Plugin::Dependencies /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/dependencies.rb:131:in `const_missing'' Specifically, I want to update a Redmine (http://www.redmine.org) instance from 0.8.0 to 1.2.1. The Redmine site has directions for updating (http://www.redmine.org/projects/redmine/wiki/ RedmineUpgrade), which I''ve gotten to work up until the final migration step. From the guide: If you are upgrading from Redmine 0.8.x as part of this migration, you need to upgrade the plugin migrations first: rake db:migrate:upgrade_plugin_migrations RAILS_ENV=production rake db:migrate_plugins RAILS_ENV=production When I try to upgrade the migrations plugin, I get the following: $ sudo rake --trace db:migrate:upgrade_plugin_migrations RAILS_ENV=production (in /var/www/html/redmine-1.2.1) ** Invoke db:migrate:upgrade_plugin_migrations (first_time) ** Invoke environment (first_time) ** Execute environment rake aborted! uninitialized constant Rails::Plugin::Dependencies /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/dependencies.rb:131:in `const_missing'' /var/www/html/redmine-1.2.1/vendor/plugins/redmine_google_calendar/ init.rb:47:in `reloadable!'' /var/www/html/redmine-1.2.1/vendor/plugins/redmine_google_calendar/ init.rb:47:in `each'' /var/www/html/redmine-1.2.1/vendor/plugins/redmine_google_calendar/ init.rb:47:in `reloadable!'' /var/www/html/redmine-1.2.1/vendor/plugins/redmine_google_calendar/ init.rb:51:in `evaluate_init_rb'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/plugin.rb: 158:in `evaluate_init_rb'' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/plugin.rb: 154:in `evaluate_init_rb'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/plugin.rb: 48:in `load'' /var/www/html/redmine-1.2.1/config/../vendor/plugins/engines/lib/ engines/plugin.rb:44:in `load'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/plugin/ loader.rb:38:in `load_plugins'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/plugin/ loader.rb:37:in `each'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/plugin/ loader.rb:37:in `load_plugins'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/initializer.rb: 369:in `load_plugins'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/initializer.rb: 165:in `process'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/initializer.rb: 113:in `send'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/initializer.rb: 113:in `run'' /var/www/html/redmine-1.2.1/config/environment.rb:20 /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'' /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/dependencies.rb:182:in `require'' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/dependencies.rb:547:in `new_constants_in'' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/dependencies.rb:182:in `require'' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/tasks/misc.rake:4 /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain'' /usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequisites'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `each'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequisites'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_call_chain'' /usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'' /home/selfsimilar/.gem/ruby/1.8/gems/rake-0.8.7/bin/rake:31 /usr/local/bin/rake:19:in `load'' /usr/local/bin/rake:19 script/about fails, too right now. $ RAILS_ENV=production script/about /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/dependencies.rb:131:in `const_missing'': uninitialized constant Rails::Plugin::Dependencies (NameError) from /var/www/html/redmine-1.2.1/vendor/plugins/ redmine_google_calendar/init.rb:47:in `reloadable!'' from /var/www/html/redmine-1.2.1/vendor/plugins/ redmine_google_calendar/init.rb:47:in `each'' from /var/www/html/redmine-1.2.1/vendor/plugins/ redmine_google_calendar/init.rb:47:in `reloadable!'' from /var/www/html/redmine-1.2.1/vendor/plugins/ redmine_google_calendar/init.rb:51:in `evaluate_init_rb'' from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/ plugin.rb:158:in `evaluate_init_rb'' from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.11/lib/ active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'' from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/ plugin.rb:154:in `evaluate_init_rb'' from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/rails/ plugin.rb:48:in `load'' ... 11 levels... from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.11/lib/commands/ about.rb:1 from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `gem_original_require'' from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `require'' from script/about:4 Redmine 1.2.1 recommends some fairly specific requirements(http:// www.redmine.org/projects/redmine/wiki/RedmineInstall#Requirements), which I believe I''ve matched: $ ruby -v ruby 1.8.6 (2008-08-11 patchlevel 287) [i686-linux] $ gem list --local *** LOCAL GEMS *** actionmailer (2.3.11) actionpack (2.3.11) activerecord (2.3.11) activeresource (2.3.11) activesupport (2.3.11) arrayfields (4.7.0) fastthread (1.0.1) fattr (1.0.3) git-rails (0.2.1) hoe (1.8.3) i18n (0.4.2) main (2.8.3) passenger (2.0.6) rack (1.1.1) rails (2.3.11) rake (0.8.7) rubyforge (1.0.2) rubygems-update (1.5.0) tzinfo (0.3.12) $ gem -v 1.3.7 My best guess at this point is that one of the gems or gem itself is not quite on the right version. The requirements page has a compatibility note: RubyGems 1.3.7 or higher is required with following limitations : Rails 2.3.5 will fail with RubyGems 1.5.0 or later, stick to previous versions of RubyGems ! Rails 2.3.11 will fail with RubyGems 1.7.0 or later, stick to previous versions of RubyGems ! I''m running 1.3.7, which should work, but it''s the minimum version. I could try to update to 1.7.0, but I''d need to update Ruby core as well, I''m pretty sure. I don''t have much experience with RoR, so I may have missed something obvious. Any help would be greatly appreciated. Thanks -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. 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