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当我使用Rails 3.1 rc1与Carrierwave(master/git/0.5.4)时,rails服务器将无法启动。我收到以下错误:Rails 3.1 rc1 and Carrierwave broken
/Library/Ruby/Gems/1.8/gems/activerecord-3.1.0.rc1/lib/active_record/base.rb:1073:in `method_missing': undefined method `mount_uploader' for #<Class> (NoMethodError)
任何想法如何解决这个问题?