When running rails generate on a new Rails 4.2 project, I keep getting the error:
rails generate
~/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.3.0
If the directory (or some sub directory Rails will work with) you are working was renamed or removed, you'll have to run
cd .
and then you can run rails generate [...].
rails generate [...]