# WEBrick won't start after engines installation **URL:** \ **Category:** Engines\ **Created:** [March 21, 2006, 6:03pm UTC](https://www.ruby-forum.com/t/webrick-wont-start-after-engines-installation/55498 "2006-03-21T18:03:16Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![JJJJJJ](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/53a042/32.png) [@JJJJJJ](https://www.ruby-forum.com/u/JJJJJJ)\ **Post date:** [March 21, 2006, 6:03pm UTC](https://www.ruby-forum.com/t/webrick-wont-start-after-engines-installation/55498/1 "2006-03-21T18:03:16Z")
I installed the engines and datebox\_engine -plugins as advised in the readme-files and everything went well. But now when I now try to start the WEBrick server, it says “`const\_missing’: uninitialized constant Engines (NameError)”. Any ideas how the Engines-constant could be initialized? Complete trace: $ruby script/server =\> Booting WEBrick… /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active\_support/dependencies.rb:200:in `const_missing': uninitialized constant Engines (NameError) from /usr/local/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/initializer.rb:188:in`load\_environment’ from /usr/local/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/initializer.rb:155:in `load_environment' from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/core_ext/kernel.rb:27:in`silence\_warnings’ from /usr/local/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/initializer.rb:152:in `load_environment' from /usr/local/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/initializer.rb:81:in`process’ from /usr/local/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/initializer.rb:42:in `run' from ./script/../config/../config/environment.rb:10 from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in`require’ from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active\_support/dependencies.rb:214:in `require' from /usr/local/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/servers/webrick.rb:52 from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in`require’ from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active\_support/dependencies.rb:214:in `require' from /usr/local/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/server.rb:28 from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in`require’ from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active\_support/dependencies.rb:214:in `require’ from script/server:3 ---
**Author:** ![JJJJJJ](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/53a042/32.png) [@JJJJJJ](https://www.ruby-forum.com/u/JJJJJJ)\ **Post date:** [March 22, 2006, 4:54am UTC](https://www.ruby-forum.com/t/webrick-wont-start-after-engines-installation/55498/2 "2006-03-22T04:54:46Z")
I have the same problem, please can someone help us? ---
**Author:** ![JJJJJJ](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/53a042/32.png) [@JJJJJJ](https://www.ruby-forum.com/u/JJJJJJ)\ **Post date:** [April 5, 2006, 1:55am UTC](https://www.ruby-forum.com/t/webrick-wont-start-after-engines-installation/55498/3 "2006-04-05T01:55:23Z")
me too… I’m using Substruct engine… But I know one thing… This occours only when we use the new version of ruby gems… I uninstalled ruby and the gems and installed the old version of ruby and ruby gems and it worked ok again… But I need help too… ---
**Author:** ![JJJJJJ](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/53a042/32.png) [@JJJJJJ](https://www.ruby-forum.com/u/JJJJJJ)\ **Post date:** [April 5, 2006, 10:46am UTC](https://www.ruby-forum.com/t/webrick-wont-start-after-engines-installation/55498/4 "2006-04-05T10:46:16Z")
If you are trying to run Rails 1.1, please ensure that you have Ruby 1.8.4 installed. Next, remove ALL of your engines and the engines plugin (just delete them). Then please run this: ruby script/plugin unsource [http://opensvn.csie.org/rails\_engines/plugins/](http://opensvn.csie.org/rails_engines/plugins/) ruby script/plugin unsource [https://opensvn.csie.org/rails\_engines/plugins/](https://opensvn.csie.org/rails_engines/plugins/) ruby script/plugin source [http://svn.rails-engines.org/plugins/](http://svn.rails-engines.org/plugins/) ruby script/plugin install engines -s [http://svn.rails-engines.org/plugins/](http://svn.rails-engines.org/plugins/) This is to ensure that your plugin command is installing from the correct location. If you are still having problems, please reply, remembering to include your versions of Ruby and Rails, and the version of all your engines (found by running ‘rake engines:info’). - james On 4/5/06, Leonardo S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). > > * * * > > engine-users mailing list > removed\_email\_address@domain.invalid > [http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org](http://lists.rails-engines.org/listinfo.cgi/engine-users-rails-engines.org) – - J \* ~