我通过 rvm 安装 Ruby 1.9.3 时遇到错误。
rvm install 1.9.3-p0
Installing Ruby from source to: /home/alder/.rvm/rubies/ruby-1.9.3-p0, this may take a while depending on your cpu(s)...
ruby-1.9.3-p0 - #fetching
ruby-1.9.3-p0 - #downloading ruby-1.9.3-p0, this may take a while depending on your connection...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- 0:00:02 --:--:-- 0^[[B^[[B^[[B^[[B^[[B^[[B^[100 9330k 100 9330k 0 0 112k 0 0:01:23 0:01:23 --:--:-- 64618
ruby-1.9.3-p0 - #extracting ruby-1.9.3-p0 to /home/alder/.rvm/src/ruby-1.9.3-p0
ruby-1.9.3-p0 - #extracted to /home/alder/.rvm/src/ruby-1.9.3-p0
Fetching yaml-0.1.3.tar.gz to /home/alder/.rvm/archives
Extracting yaml-0.1.3.tar.gz to /home/alder/.rvm/src
Configuring yaml in /home/alder/.rvm/src/yaml-0.1.3.
Compiling yaml in /home/alder/.rvm/src/yaml-0.1.3.
Installing yaml to /home/alder/.rvm/usr
ruby-1.9.3-p0 - #configuring
ruby-1.9.3-p0 - #compiling
ruby-1.9.3-p0 - #installing
Removing old Rubygems files...
-e:1: Use RbConfig instead of obsolete and deprecated Config.
Installing rubygems dedicated to ruby-1.9.3-p0...
Installing rubygems for /home/alder/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
ERROR: Error running 'GEM_PATH="/home/alder/.rvm/gems/ruby-1.9.3-p0:/home/alder/.rvm/gems/ruby-1.9.3-p0@global:/home/alder/.rvm/gems/ruby-1.9.3-p0:/home/alder/.rvm/gems/ruby-1.9.3-p0@global" GEM_HOME="/home/alder/.rvm/gems/ruby-1.9.3-p0" "/home/alder/.rvm/rubies/ruby-1.9.3-p0/bin/ruby" "/home/alder/.rvm/src/rubygems-1.6.2/setup.rb"', please read /home/alder/.rvm/log/ruby-1.9.3-p0/rubygems.install.log
WARN: Installation of rubygems did not complete successfully.
ruby-1.9.3-p0 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.9.3-p0 - #importing default gemsets (/home/alder/.rvm/gemsets/)
Install of ruby-1.9.3-p0 - #complete
日志档案：
[2011-11-01 17:57:51] GEM_PATH="/home/alder/.rvm/gems/ruby-1.9.3-p0:/home/alder/.rvm/gems/ruby-1.9.3-p0@global:/home/alder/.rvm/gems/ruby-1.9.3-p0:/home/alder/.rvm/gems/ruby-1.9.3-p0@global" GEM_HOME="/home/alder/.rvm/gems/ruby-1.9.3-p0" "/home/alder/.rvm/rubies/ruby-1.9.3-p0/bin/ruby" "/home/alder/.rvm/src/rubygems-1.6.2/setup.rb"
/home/alder/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/rubygems.rb:480:in `find_files': undefined method `map' for Gem::Specification:Class (NoMethodError)
from /home/alder/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/rubygems.rb:1087:in `load_plugins'
from /home/alder/.rvm/src/rubygems-1.6.2/lib/rubygems/gem_runner.rb:84:in `<top (required)>'
from /home/alder/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /home/alder/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /home/alder/.rvm/src/rubygems-1.6.2/setup.rb:25:in `<main>'
在此之前，我已经成功安装了新的 ruby 版本。我在谷歌上发现了这样的错误，但没有解决这个问题。并且rails服务器无法启动。
我必须升级 RVM。
rvm get head
rvm reload
rvm install 1.9.3-p194
rvm use 1.9.3
如果 1.9.3-p194 不是最新版本（截至 2012 年 6 月 7 日），请转至红宝石网站 http://www.ruby-lang.org/en/downloads/找出是什么。
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