Ruby on rails 带有ruby 1.9.2的RVM错误：没有这样的文件来加载config/boot

我似乎无法理解这一点。我是unix环境的新手，希望这将是一个容易解决的问题。问题是，当我在主目录和之后的任何目录中时，rails找不到config/boot，也无法运行任何rails命令。我尝试用rvm内爆来安装rvm，并通过rvm网站重新安装。如果我在主目录之前，即我在~/和我的cd..中，然后运行rails-v，则不存在这些问题，一切正常

当我在我的主目录~/及更高的目录中时，我在尝试任何rails命令（即rails-v note-rvm use system rails）时出错：

macbook-4:~ dannykirschner$ rails -v
<internal:lib/rubygems/custom_require>:29:in `require': no such file to load -- /Users/dannykirschner/config/boot (LoadError)
    from <internal:lib/rubygems/custom_require>:29:in `require'
    from script/rails:5:in `<main>'

更令人费解的是，在1.8.7中，我可以使用rails命令，但前提是我指定了一个gemset。rails也安装在global gemset中

    macbook-4:~ dannykirschner$ rvm use 1.8.7
Using /Users/dannykirschner/.rvm/gems/ruby-1.8.7-p334
macbook-4:~ dannykirschner$ rails -v
script/rails:5:in `require': no such file to load -- /Users/dannykirschner/config/boot (LoadError)
    from script/rails:5

    macbook-4:~ dannykirschner$ rvm use 1.8.7@2.3.11
Using /Users/dannykirschner/.rvm/gems/ruby-1.8.7-p334 with gemset 2.3.11
macbook-4:~ dannykirschner$ rails -v
Rails 2.3.11

感谢您的帮助

    macbook-4:~ dannykirschner$ rvm use 1.8.7
Using /Users/dannykirschner/.rvm/gems/ruby-1.8.7-p334
macbook-4:~ dannykirschner$ rails -v
script/rails:5:in `require': no such file to load -- /Users/dannykirschner/config/boot (LoadError)
    from script/rails:5

    macbook-4:~ dannykirschner$ rvm use 1.8.7@2.3.11
Using /Users/dannykirschner/.rvm/gems/ruby-1.8.7-p334 with gemset 2.3.11
macbook-4:~ dannykirschner$ rails -v
Rails 2.3.11