Ruby-on-Rails: ActiveAdmin SuperClass TypeError mismatch

Question

I'm just trying to install ActiveAdmin. Seems pretty simple.

http://net.tutsplus.com/tutorials/ruby/create-beautiful-administration-interfaces-with-active-admin/

But when I get to the rails, generate active_admin: install

I get:

$ rails generate active_admin:install /home/user/active_admin/config/application.rb:13:in `<module:ActiveAdmin>': superclass mismatch for class Application (TypeError) from /home/user/active_admin/config/application.rb:12:in `<top (required)>' from /home/user/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/commands.rb:24:in `require' from /home/user/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/commands.rb:24:in `<top (required)>' from script/rails:6:in `require' from script/rails:6:in `<main>' 

It does not seem to find anyone else with this problem. I even deleted active_admin and started all over again from scratch ... without dice.

Answer 1

You need to rename the application, it cannot be called active_admin .