If you’re like me and you skip reading a gem’s README when you install the latest, you’ll be seriously sorry when you don’t for inherited_resources because it is Rails 3 only. The same can be said for responders. You’ll get a big fat punch in the face with this error:

uninitialized constant Rails::Railtie

But fear not, just reverting to the following version will get you back on track:

"inherited_resources", :version => "1.0.0"
"responders", :version => "0.4.0"

Now, on your bike. Get back to work!