After upgrading to Ubuntu 11.10 from 11.04 my Rails application does not start properly
$ script/server /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/ dependencies.rb:55: uninitialized constant ActiveSupport::Dependencies::Mutex (NameError) from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require' from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require' from /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support.rb: 56 from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require' from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require' from /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:1 from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require' from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require' from script/server:3 I am running ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-linux] activesupport-2.3.5 Does somebody have an idea how to fix this problem? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.