似乎无法让Sinatra和MacRuby / control_tower一起工作。
我的sinatra服务器非常简单（main.rb）：
require 'rubygems'
require 'sinatra'
get "/" do
"Hello World!"
end
使用一个非常简单的RackUp文件（config.ru）：
require 'main'
run Sinatra::Application
正在运行：control_tower看起来正在运行，但后来爆炸了：
You are cleared for take-off!
Listening on 0.0.0.0:3000
NoMethodError - undefined method `GET /' for #<Sinatra::Application:0x20026c9e0>:
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:1033:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:604:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:654:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:631:in `process_route:'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:603:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:600:in `route!'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:739:in `dispatch!'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:530:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:706:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:706:in `invoke'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:523:in `call!:'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/rack-1.2.1/lib/rack/showexceptions.rb:24:in `call:'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:1142:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:1142:in `call:'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/control_tower-1.0/lib/control_tower/rack_socket.rb:46:in `block'
NoMethodError: undefined method `GET /' for #<Sinatra::Application:0x20026c9e0>
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:739:in `dispatch!'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:530:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:706:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:706:in `invoke'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:523:in `call!:'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/rack-1.2.1/lib/rack/showexceptions.rb:24:in `call:'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:1142:in `block'
/Users/jpoz/.rvm/gems/macruby-0.7.1/gems/sinatra-1.1.0/lib/sinatra/base.rb:1142:in `call:'