升级到rubygems 1.8.x后,如何让`gem`再次运行？

Soooo,我使用gem upgrade –system从1.7.2升级到 RubyGems 1.8.1,然后立即按照 Eric Hodel’s blog的建议运行gem pristine –all –no-extensions.在运行gem命令时遇到错误后,我用google搜索有点,发现一些建议给宝石卸载带有弃用警告的宝石,但后来意识到我不能,因为宝石卸载只是错误 – 任何其他命令 – 包括只是简单的’宝石’.

当我运行任何这些命令时,我仍然收到一堆“已弃用”的警告,然后是这个回溯：

/Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:277:in `block in _resort!': undefined method `name' for nil:NilClass (NoMethodError)
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:276:in `sort!'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:276:in `_resort!'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:270:in `_all'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:402:in `each'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:477:in `map'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:477:in `find_files'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:1061:in `load_plugins'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/gem_runner.rb:85:in `<top (required)>'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/bin/gem:9:in `<main>'

当我再次尝试这个时,同样的事情发生了,但是使用相同的更新命令从RubyGems 1.6.2升级.我尝试了第3次,但是使用下面的建议来做gem install ruby??gems-update&& update_rubygems – 刚刚导致安装失败,并让我使用了一个可用的RubyGems 1.6.2.

我想a)使用RubyGems 1.8.x,和b)撤消这些更改,而不是再次吹掉我的1.9.2安装.
有任何想法吗？我在跑：

> rvm 1.6.5
> MRI 1.9.2

RubyGems Environment:
  - RUBYGEMS VERSION: 1.6.2
  - RUBY VERSION: 1.9.2 (2011-02-18 patchlevel 180) [x86_64-darwin10.7.0]
  - INSTALLATION DIRECTORY: /Users/sloveless/.rvm/gems/ruby-1.9.2-p180
  - RUBY EXECUTABLE: /Users/sloveless/.rvm/rubies/ruby-1.9.2-p180/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/sloveless/.rvm/gems/ruby-1.9.2-p180/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-10
  - GEM PATHS:
     - /Users/sloveless/.rvm/gems/ruby-1.9.2-p180
     - /Users/sloveless/.rvm/gems/ruby-1.9.2-p180@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - :sources => ["http://rubygems.org"]
  - REMOTE SOURCES:
     - http://rubygems.org

FWIW,今天(5月10日)在RubyGems错误回购中记录了类似的错误,我添加了类似的信息,here