Activeadmin: Uninitialized constant Version (NameError) when starting Server

[Plinpod]

So I had my app working just fine and then I had to migrate it over to a new development server. I copied all the files over, ran bundle install with no errors and then when I run rails server

I get this error.

=> Ctrl-C to shutdown server
Exiting
C:/Sites/mysite/app/admin/version.rb:1:in `<top (required)>': uninitialized con
stant Version (NameError)
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activeadmin-0.
5.1/lib/active_admin/application.rb:190:in `block in load!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activeadmin-0.
5.1/lib/active_admin/application.rb:190:in `each'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activeadmin-0.
5.1/lib/active_admin/application.rb:190:in `load!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activeadmin-0.
5.1/lib/active_admin/application.rb:213:in `routes'
        from C:in `routes'
        from C:/Sites/mysite/config/routes.rb:13:in `block in <top (required)>'

        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2
.11/lib/action_dispatch/routing/route_set.rb:282:in `instance_exec'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2
.11/lib/action_dispatch/routing/route_set.rb:282:in `eval_block'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2
.11/lib/action_dispatch/routing/route_set.rb:260:in `draw'
        from C:/Sites/mysite/config/routes.rb:1:in `<top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/application/routes_reloader.rb:40:in `each'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/application/routes_reloader.rb:40:in `load_paths'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/application/routes_reloader.rb:16:in `reload!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/application.rb:108:in `reload_routes!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activeadmin-0.
5.1/lib/active_admin/reloader.rb:34:in `reload!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activeadmin-0.
5.1/lib/active_admin/reloader.rb:61:in `block in attach!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.11/lib/active_support/callbacks.rb:429:in `_run__334365865__prepare__8021230
81__callbacks'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.11/lib/active_support/callbacks.rb:405:in `__run_callback'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.11/lib/active_support/callbacks.rb:385:in `_run_prepare_callbacks'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-
3.2.11/lib/active_support/callbacks.rb:81:in `run_callbacks'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2
.11/lib/action_dispatch/middleware/reloader.rb:74:in `prepare!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2
.11/lib/action_dispatch/middleware/reloader.rb:48:in `prepare!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/application/finisher.rb:47:in `block in <module:Finisher>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/initializable.rb:30:in `instance_exec'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/initializable.rb:30:in `run'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/initializable.rb:55:in `block in run_initializers'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/initializable.rb:54:in `each'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/initializable.rb:54:in `run_initializers'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/application.rb:136:in `initialize!'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/railtie/configurable.rb:30:in `method_missing'
        from C:/Sites/mysite/config/environment.rb:5:in `<top (required)>'
        from C:/Sites/mysite/config.ru:3:in `block in <main>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib
/rack/builder.rb:51:in `instance_eval'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib
/rack/builder.rb:51:in `initialize'
        from C:/Sites/mysite/config.ru:in `new'
        from C:/Sites/mysite/config.ru:in `<main>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib
/rack/builder.rb:40:in `eval'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib
/rack/builder.rb:40:in `parse_file'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib
/rack/server.rb:200:in `app'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/commands/server.rb:46:in `app'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib
/rack/server.rb:304:in `wrapped_app'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rack-1.4.5/lib
/rack/server.rb:254:in `start'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/commands/server.rb:70:in `start'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/commands.rb:55:in `block in <top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/commands.rb:50:in `tap'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
1/lib/rails/commands.rb:50:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

Any ideas as to what is going on here?

[seanlinsley]

This would only happen if you don't have a file in app/models/version.rb.

If you can't reference Version from within rails console, Active Admin wouldn't work either.

[khuramdogar]

how to add spree::model in activeadmin???

[rakeshrajput537]

Answer: Simply nothing to do , go to your routes and remove the active_admin routes