Virtual machine 流浪汉：未定义的方法'；方框url='；

我试图根据Jeffery Way教程设置一个基本的Vagrant实例。当我运行“流浪者”时，出现以下错误：

../Vagrantfile:9:in `block in <top (required)>': undefined method `box_url=' for "precise32":String (NoMethodError)
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/config/v2/loader.rb:37:in `call'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/config/v2/loader.rb:37:in `load'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/config/loader.rb:103:in `block (2 levels) in load'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/config/loader.rb:97:in `each'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/config/loader.rb:97:in `block in load'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/config/loader.rb:94:in `each'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/config/loader.rb:94:in `load'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/vagrantfile.rb:28:in `initialize'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/environment.rb:574:in `new'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/environment.rb:574:in `vagrantfile'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/environment.rb:359:in `host'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/environment.rb:168:in `block in action_runner'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/runner.rb:33:in `call'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/action/runner.rb:33:in `run'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/environment.rb:346:in `hook'
    from /Applications/Vagrant/embedded/gems/gems/vagrant-1.6.3/lib/vagrant/environment.rb:556:in `unload'
    from /Applications/Vagrant/bin/../embedded/gems/gems/vagrant-1.6.3/bin/vagrant:169:in `ensure in <main>'
    from /Applications/Vagrant/bin/../embedded/gems/gems/vagrant-1.6.3/bin/vagrant:169:in `<main>'

---

谷歌没有透露任何关于“未定义的方法‘box_url=’”的信息。。。非常感谢您的帮助。

您使用了错误的语法！应该是这样

config.vm.box = "precise32"
config.vm.box_url = "http://files.vagrantup.com/precise32.box"

config.vm.box = "precise32"
config.vm.box_url = "http://files.vagrantup.com/precise32.box"