Install Rails Error "invalid gem: package is corrupt"
installation, ruby-on-rails, rubygems, rvm
Solution
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
After the gems are installed you can upgrade the Psych gem again should you need it.
Problem
I am running Mac OSX 10.9.1 and I am using RVM to manage Ruby v2.0.0-p353. 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 ``` 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) ``` Does anyone have suggestions to fix this?