gemfile 文件 gem "galetahub-simple_captcha", :require => "simple_captcha" gem 'rmagick', '2.13.2'
用火狐看到的错误 NetworkError: 500 Internal Server Error - http://localhost:3000/simple_captcha?code=60afbd3f50709a94c5e618c33365d3026f9e153f&time=1360395457"