title: Cannot find plugin "karma-mocha-reporter". npm install works, but error persist.
body: <p>As soon as I try to add </p>
  
  <pre><code>    plugins: [
        'karma-jasmine',
        'karma-mocha-reporter'
      ],
  </code></pre>
  
  <p>to my karma.config.js</p>
  
  <p>I get this error: </p>
  
  <pre><code>C:\git\angularjs\.bin&gt;karma start karma.config.js
  11 11 2015 15:21:10.617:WARN [plugin]: Cannot find plugin "karma-mocha-reporter".
    Did you forget to install it ?
    npm install karma-mocha-reporter --save-dev
  11 11 2015 15:21:10.671:INFO [karma]: Karma v0.13.14 server started at http://localhost:9876/
  11 11 2015 15:21:10.672:WARN [launcher]: Can not load "Chrome", it is not registered!
    Perhaps you are missing some plugin?
  </code></pre>
  
  <p>obviously I tried running the </p>
  
  <p><em>npm install karma-mocha-reporter --save-dev</em></p>
  
  <p>also globally installing it </p>
  
  <p><em>npm install karma-mocha-reporter --save-dev -g</em></p>
  
  <p>and it installs fine. But still I keep getting the error messages when I launch karma. Is it installing in the wrong location or something?</p>