activeadmin.git (at master) is not yet checked out error when installing active admin

Question

Active admin gem is added to my rails project but every time i tried to install rails g active_admin:install, I am getting error like

git://github.com/activeadmin/activeadmin.git (at master) is not yet checked out. Run bundle install first.

I definitely ran bundle before running "rails g active_admin:install". After running "bundle show" i am seeing i have " * activeadmin (1.0.0.pre 3f916d6)" added to my project but keep getting this error message.My gem file below

source 'https://rubygems.org'

gem 'rails', '4.1.8'
gem 'sqlite3'
gem 'sass-rails', '~> 4.0.3'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.0.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0',

    group: :doc
gem 'spring',        group: :development

gem 'devise'
gem 'activeadmin', github: 'activeadmin'

Answer 1

I had the same issue. It is something to do with spring as when I removed it from the gemfile and run bundle install again, I was able to run rails g active_admin:install

Answer 2

Instead of removing spring you could also try this tip from the spring github issue:

Try running bundle exec spring binstub --all - it should regenerate your bin/spring file