cannot load such file -- capistrano/ext/multistage

I'm using rvm 1.16.20
and noticed the following issue

.rvm/gems/ruby-1.9.3-p0@mygemset/gems/capistrano-2.8.0/lib/capistrano/configuration/loading.rb:152:in `require': cannot load such file -- capistrano/ext/multistage (LoadError)

Using

• ruby-1.9.3-p0
• ruby-1.9.3-p362

... but I do not have this issue using

• ruby-1.9.3-p194

My first three lines of my Capfile are

load 'deploy' if respond_to?(:namespace) # cap2 differentiator
Dir['vendor/plugins//recipes/.rb'].each { |plugin| load(plugin) }
require 'capistrano/ext/multistage'

[kellydunn]

+1 I'm also experiencing this issue on ruby-1.9.3-p448

[chileshemartin]

If you are using capistrano 3.11.1 or later, just comment the line require 'capistrano/ext/multistage' from deploy.rb. It was the cause of all my nightmares.