Ruby on rails Windows 7上的Heroku问题（cmd）

我刚刚在Windows7上安装了heroku ruby gem，并在尝试创建新实例时收到以下错误。在过去的两天里，我一直在研究原因，但运气不好

C:\Users\admin\RubymineProjects\first_app>heroku create
Invalid gemspec in [C:/RailsInstaller/Ruby1.8.7/lib/ruby/gems/1.8/specifications
/heroku-2.8.5.gemspec]: invalid date format in specification: "2011-10-05 00:00:
00.000000000Z"
C:/RailsInstaller/Ruby1.8.7/lib/ruby/site_ruby/1.8/rubygems.rb:926:in `report_ac
tivate_error': Could not find RubyGem heroku (>= 0) (Gem::LoadError)
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/site_ruby/1.8/rubygems.rb:244:
in `activate_dep'
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/site_ruby/1.8/rubygems.rb:236:
in `activate'
        from C:/RailsInstaller/Ruby1.8.7/lib/ruby/site_ruby/1.8/rubygems.rb:1307
:in `gem'
        from C:/RailsInstaller/Ruby1.8.7/bin/heroku:18

C:\Users\admin\RubymineProjects\first_app>

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尝试以下解决方案之一（如果尚未尝试）-这不是Windows特有的解决方案：