Ruby rails 控制台、RVM 和 readline 的问题

我安装rvm是为了确保我的本地ruby开发版本与我使用的特定应用(ruby 1.8.7)的服务器版本相同.我已经安装了ruby 1.8.7.但是，当我try 启动rails控制台时，我会出现以下错误:

Readline was unable to be required, if you need completion or history install readline then reinstall the ruby.
You may follow 'rvm notes' for dependencies and/or read the docs page http://rvm.beginrescueend.com/packages/readline/ . Be sure you 'rvm remove X ; rvm install X' to re-compile your ruby with readline support after obtaining the readline libraries.
Couldn't load Wirble: no such file to load -- wirble

我已经阅读了错误所指页面上的注释(http://rvm.beginrescueend.com/packages/readline/)，并按照说明进行操作，基本上包括安装readline、卸载ruby 1.8.7，然后再次安装ruby 1.8.7和readline支持.(实际上，该页面使用ruby 1.9.2作为示例，但我认为它也应该与1.8.7配合使用.也许情况并非如此).

但是，我还是犯了同样的错误.还有其他人经历过这件事并找到了答案吗

编辑-我正在使用Ubuntu9.10 btw，以防相关.

编辑-以下是我对rvm info的输出:

$ rvm info

system:

  system:
    uname:       "Linux max-laptop 2.6.31-22-generic #68-Ubuntu SMP Tue Oct 26 16:38:35 UTC 2010 i686 GNU/Linux"
    bash:        "/bin/bash => GNU bash, version 4.0.33(1)-release (i486-pc-linux-gnu)"
    zsh:         " => not installed"

  rvm:
    version:      "rvm 1.1.6 by Wayne E. Seguin (wayneeseguin@gmail.com) [http://rvm.beginrescueend.com/]"

  homes:
    gem:          "not set"
    ruby:         "not set"

  binaries:
    ruby:         "/usr/bin/ruby"
    irb:          "/usr/bin/irb"
    gem:          "/usr/bin/gem"
    rake:         "/usr/bin/rake"

  environment:
    PATH:         "/home/max/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/var/lib/gems/1.8/bin:/home/max/software/svnmerge:/home/max/.gem/ruby/1.8/bin:/home/max/work/e_learning_resource/trunk/public/assets/dvd_files/bin:/opt/firefox:/home/max/.rvm/bin:/home/max/.rvm/bin"
    GEM_HOME:     ""
    GEM_PATH:     ""
    MY_RUBY_HOME: ""
    IRBRC:        ""
    RUBYOPT:      ""
    gemset:       ""