Gem::LoadError: You have already activated rake 10.3.1, but your Gemfile require
s rake 10.1.1. Prepending bundle exec to your command may solve this.
e:/redmine/redmine-2.5.2/config/boot.rb:6:in <top (required)>'
e:/redmine/redmine-2.5.2/config/application.rb:1:in'
e:/redmine/redmine-2.5.2/Rakefile:5:in `'
(See full trace by running task with --trace)
我也遇到了这样的情况，也使用了大家提供的方法，但仍然提示 rake aborted，求助大家帮忙
提示代码如下：
localhost:octopress Siri$ rake install
rake aborted!
Gem::LoadError: You have already activated rake 11.2.2, but your Gemfile requires rake 10.5.0. Prepending bundle exec to your command may solve this.
/Users/Siri/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/runtime.rb:35:in block in setup'
/Users/Siri/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/runtime.rb:20:inmap'
/Users/Siri/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/runtime.rb:20:in setup'
/Users/Siri/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler.rb:95:insetup'
/Users/Siri/.rvm/gems/ruby-2.3.0/gems/bundler-1.12.5/lib/bundler/setup.rb:9:in <top (required)>'
/Users/Siri/octopress/Rakefile:2:in'
/Users/Siri/.rvm/gems/ruby-2.3.0/gems/rake-11.2.2/exe/rake:27:in <top (required)>'
LoadError: cannot load such file -- bundler/setup
/Users/Siri/octopress/Rakefile:2:in'
/Users/Siri/.rvm/gems/ruby-2.3.0/gems/rake-11.2.2/exe/rake:27:in `'
(See full trace by running task with --trace)