title: Ruby: incompatible library version
body: <p>I am learning Ruby on Rails, so I've created my first project and I got this error: </p>
  
  <pre><code>/Users/Anton/.rvm/gems/ruby-2.3.0/gems/debug_inspector-0.0.2/lib/debug_inspector.rb:6:in `require': incompatible library version - /Users/Anton/.rvm/gems/ruby-2.3.0/gems/debug_inspector-0.0.2/lib/debug_inspector.bundle (fatal)
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/debug_inspector-0.0.2/lib/debug_inspector.rb:6:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/binding_of_caller-0.7.2/lib/binding_of_caller/mri2.rb:1:in `require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/binding_of_caller-0.7.2/lib/binding_of_caller/mri2.rb:1:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/binding_of_caller-0.7.2/lib/binding_of_caller.rb:9:in `require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/binding_of_caller-0.7.2/lib/binding_of_caller.rb:9:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/web-console-2.3.0/lib/web_console.rb:1:in `require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/web-console-2.3.0/lib/web_console.rb:1:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/web-console-2.3.0/lib/web-console.rb:1:in `require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/web-console-2.3.0/lib/web-console.rb:1:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.5/lib/bundler/runtime.rb:86:in `require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.5/lib/bundler/runtime.rb:86:in `block (2 levels) in require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.5/lib/bundler/runtime.rb:81:in `each'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.5/lib/bundler/runtime.rb:81:in `block in require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.5/lib/bundler/runtime.rb:70:in `each'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.5/lib/bundler/runtime.rb:70:in `require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.5/lib/bundler.rb:102:in `require'
  from /Users/Anton/Work/2-Work/s-art-main/config/application.rb:7:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:78:in `require'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:78:in `block in server'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in `tap'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in `server'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
  from /Users/Anton/.rvm/gems/ruby-2.3.0@global/gems/railties-4.2.6/lib/rails/commands.rb:17:in `&lt;top (required)&gt;'
  from /Users/Anton/Work/2-Work/s-art-main/bin/rails:9:in `require'
  from /Users/Anton/Work/2-Work/s-art-main/bin/rails:9:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client/rails.rb:28:in `load'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client/rails.rb:28:in `call'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client/command.rb:7:in `call'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/client.rb:30:in `run'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/spring-1.7.1/bin/spring:49:in `&lt;top (required)&gt;'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/binstub.rb:11:in `load'
  from /Users/Anton/.rvm/gems/ruby-2.3.0/gems/spring-1.7.1/lib/spring/binstub.rb:11:in `&lt;top (required)&gt;'
  from /Users/Anton/Work/2-Work/s-art-main/bin/spring:13:in `require'
  from /Users/Anton/Work/2-Work/s-art-main/bin/spring:13:in `&lt;top (required)&gt;'
  from bin/rails:3:in `load'
  from bin/rails:3:in `&lt;main&gt;'
  </code></pre>
  
  <p>Can you please help me? I've googled tons of similar errors and still haven't found the right answer.</p>
  
  <pre><code>Rails 4.2.6
  ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
  </code></pre>
  
  <p>Thank you!</p>