update_rubygems抛出"undefined method `find_by_path' for Gem::Specification:Class (NoMethodError)"

Question

我使用的是Redmine 1.0.3，当访问它时，我从Passenger得到以下错误：

错误消息：

"的未定义方法"name"；actionmailer"：字符串

异常类别：

无方法错误

建议的修复程序（请参阅"actionmailer"的未定义方法"name"：String）不起作用：

# gem install rubygems-update -v 1.3.5
Successfully installed rubygems-update-1.3.5
1 gem installed
# update_rubygems --version=1.3.5
Installing RubyGems 1.3.5
/usr/lib/ruby/1.9.1/rubygems.rb:206:in `try_activate': undefined method `find_by_path' for Gem::Specification:Class (NoMethodError)
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:59:in `rescue in require'
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:35:in `require'
        from /var/lib/gems/1.9.1/gems/rubygems-update-1.3.5/lib/rubygems/config_file.rb:34:in `<class:ConfigFile>'
        from /var/lib/gems/1.9.1/gems/rubygems-update-1.3.5/lib/rubygems/config_file.rb:12:in `<top (required)>'
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from /var/lib/gems/1.9.1/gems/rubygems-update-1.3.5/lib/rubygems/gem_runner.rb:8:in `<top (required)>'
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from setup.rb:25:in `<main>'

我的Ruby版本是1.9.3，Rails版本是2.3.5。

有人知道怎么解决这个问题吗？提前感谢！

Answer 1

将我的Ruby版本降级到1.8.7解决了这个问题。