title: Can't run new Angular CLI project
body: <p>I've got a homework assignment for a job interview. It needs to be done in Angular, so I figured I'd quickly upgrade Node.js, NPM and Angular CLI before I start. It looks like that was a bad idea.</p>
  
  <p>After running my command: <code>ng new project-name --style scss</code> everything seems to create itself just fine. But when I run <code>ng serve</code> I'm getting the following error:</p>
  
  <pre><code>Cannot find module 'uglifyjs-webpack-plugin'
  Error: Cannot find module 'uglifyjs-webpack-plugin'
      at Function.Module._resolveFilename (module.js:555:15)
      at Function.Module._load (module.js:482:25)
      at Module.require (module.js:604:17)
      at require (internal/module.js:11:18)
      at Object.&lt;anonymous&gt; (/Users/andybarratt/dev/project-name/node_modules/@angular/cli/models/webpack-
  configs/production.js:13:24)
      at Module._compile (module.js:660:30)
      at Object.Module._extensions..js (module.js:671:10)
      at Module.load (module.js:573:32)
      at tryModuleLoad (module.js:513:12)
      at Function.Module._load (module.js:505:3)
      at Module.require (module.js:604:17)
      at require (internal/module.js:11:18)
      at Object.&lt;anonymous&gt; (/Users/andybarratt/dev/project-name/node_modules/@angular/cli/models/webpack-
  configs/index.js:9:10)
      at Module._compile (module.js:660:30)
      at Object.Module._extensions..js (module.js:671:10)
      at Module.load (module.js:573:32)
  </code></pre>
  
  <p>I can't find anything with this error involving Angular anywhere. As I say, it's a completely clean project; I haven't even begun coding yet.</p>
  
  <p>Running <code>ng --version</code> gives me this:</p>
  
  <pre><code>    _                      _                 ____ _     ___
     / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
    / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
   / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
  /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                 |___/
  
  Angular CLI: 1.6.6
  Node: 9.4.0
  OS: darwin x64
  Angular: 5.2.2
  ... animations, common, compiler, compiler-cli, core, forms
  ... http, language-service, platform-browser
  ... platform-browser-dynamic, router
  
  @angular/cli: 1.6.6
  @angular-devkit/build-optimizer: 0.0.42
  @angular-devkit/core: 0.0.29
  @angular-devkit/schematics: 0.0.52
  @ngtools/json-schema: 1.1.0
  @ngtools/webpack: 1.9.6
  @schematics/angular: 0.1.17
  typescript: 2.5.3
  webpack: 3.10.0
  </code></pre>
  
  <p>Help?</p>