本文介绍了安装Rails错误“invalid gem：package is corrupt”的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在运行Mac OS X 10.9.1，我正在使用RVM来管理Ruby v2.0.0-p353。
I am running Mac OSX 10.9.1 and I am using RVM to manage Ruby v2.0.0-p353.
当我尝试安装Rails时，出现此错误：
When I try to install Rails I get this error:
Ryans-MacBook-Air-2:~ ryan$ gem install rails
ERROR: Error installing rails:
invalid gem: package is corrupt, exception while verifying: undefined method`path2class' for #<Psych::ClassLoader:0x0000010c9d0be0> (NoMethodError) in /Users/ryan/.rvm/gems/ruby-2.0.0-p353/cache/i18n-0.6.9.gem
以下是我已安装的宝石列表：
Here is a list of gems I have installed:
Ryans-MacBook-Air-2:~ ryan$ gem list
*** LOCAL GEMS ***
bigdecimal (1.2.3, 1.2.0)
bundler (1.5.1)
bundler-unload (1.0.2)
executable-hooks (1.2.6)
gem-wrappers (1.2.1)
io-console (0.4.2)
json (1.8.1, 1.7.7)
minitest (5.2.0, 4.3.2)
psych (2.0.2, 2.0.0)
rake (10.1.1, 0.9.6)
rdoc (4.1.0, 4.0.0)
rubygems-bundler (1.4.2)
rvm (1.11.3.8)
test-unit (2.5.5, 2.0.0.0)
有没有人有解决此问题的建议？
Does anyone have suggestions to fix this?
推荐答案
最新版本不再有 class2path 可以通过将Psych gem降级到2.0.0来避免：
The latest version no longer has the class2path method so the problem can be avoided by downgrading the Psych gem to version 2.0.0:
gem list psych # note down latest version
gem uninstall psych -v 2.0.5 # or whatever version you have installed
可以在需要时再次升级心灵宝石。
After the gems are installed you can upgrade the Psych gem again should you need it.
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