title: 'npm start' does not work anymore
body: <p>My npm start does not work anymore, but I still worked with it yesterday. I also haven't changed anything, as far as I'm concerned. I'm using it to start up my react starter kit (facebooks official starterkit). What could it be?</p>
  
  <pre><code>&gt; apicalltestapp@0.1.0 start /Users/.../reactapp
  &gt; react-scripts start
  
  module.js:457
      throw err;
      ^
  
  Error: Cannot find module 'cross-spawn'
      at Function.Module._resolveFilename (module.js:455:15)
      at Function.Module._load (module.js:403:25)
      at Module.require (module.js:483:17)
      at require (internal/module.js:20:19)
      at Object.&lt;anonymous&gt; (/Users/reactapp/node_modules/.bin/react-scripts:2:13)
      at Module._compile (module.js:556:32)
      at Object.Module._extensions..js (module.js:565:10)
      at Module.load (module.js:473:32)
      at tryModuleLoad (module.js:432:12)
      at Function.Module._load (module.js:424:3)
  
  npm ERR! Darwin 15.6.0
  npm ERR! argv "/Users/dswork/.nvm/versions/node/v6.7.0/bin/node" "/Users/dswork/.nvm/versions/node/v6.7.0/bin/npm" "start"
  npm ERR! node v6.7.0
  npm ERR! npm  v3.10.8
  npm ERR! code ELIFECYCLE
  npm ERR! apicalltestapp@0.1.0 start: `react-scripts start`
  npm ERR! Exit status 1
  npm ERR! 
  npm ERR! Failed at the apicalltestapp@0.1.0 start script 'react-scripts start'.
  npm ERR! Make sure you have the latest version of node.js and npm installed.
  npm ERR! If you do, this is most likely a problem with the apicalltestapp package,
  npm ERR! not with npm itself.
  npm ERR! Tell the author that this fails on your system:
  npm ERR!     react-scripts start
  npm ERR! You can get information on how to open an issue for this project with:
  npm ERR!     npm bugs apicalltestapp
  npm ERR! Or if that isn't available, you can get their info via:
  npm ERR!     npm owner ls apicalltestapp
  npm ERR! There is likely additional logging output above.
  
  npm ERR! Please include the following file with any support request:
  npm ERR!     /Users/dswork/Coding/reactcafe/npm-debug.log
  </code></pre>
  
  <p>here is the npm-debug.log:</p>
  
  <pre><code>0 info it worked if it ends with ok
  1 verbose cli [ '/Users/dswork/.nvm/versions/node/v6.7.0/bin/node',
  1 verbose cli   '/Users/dswork/.nvm/versions/node/v6.7.0/bin/npm',
  1 verbose cli   'start' ]
  2 info using npm@3.10.8
  3 info using node@v6.7.0
  4 verbose run-script [ 'prestart', 'start', 'poststart' ]
  5 info lifecycle apicalltestapp@0.1.0~prestart: apicalltestapp@0.1.0
  6 silly lifecycle apicalltestapp@0.1.0~prestart: no script for prestart, continuing
  7 info lifecycle apicalltestapp@0.1.0~start: apicalltestapp@0.1.0
  8 verbose lifecycle apicalltestapp@0.1.0~start: unsafe-perm in lifecycle true
  9 verbose lifecycle apicalltestapp@0.1.0~start: PATH: /Users/dswork/.nvm/versions/node/v6.7.0/lib/node_modules/npm/bin/node-gyp-bin:/Users/dswork/Coding/reactcafe/node_modules/.bin:/Users/dswork/.nvm/versions/node/v6.7.0/bin:/opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
  10 verbose lifecycle apicalltestapp@0.1.0~start: CWD: /Users/dswork/Coding/reactcafe
  11 silly lifecycle apicalltestapp@0.1.0~start: Args: [ '-c', 'react-scripts start' ]
  12 silly lifecycle apicalltestapp@0.1.0~start: Returned: code: 1  signal: null
  13 info lifecycle apicalltestapp@0.1.0~start: Failed to exec start script
  14 verbose stack Error: apicalltestapp@0.1.0 start: `react-scripts start`
  14 verbose stack Exit status 1
  14 verbose stack     at EventEmitter.&lt;anonymous&gt; (/Users/dswork/.nvm/versions/node/v6.7.0/lib/node_modules/npm/lib/utils/lifecycle.js:255:16)
  14 verbose stack     at emitTwo (events.js:106:13)
  14 verbose stack     at EventEmitter.emit (events.js:191:7)
  14 verbose stack     at ChildProcess.&lt;anonymous&gt; (/Users/dswork/.nvm/versions/node/v6.7.0/lib/node_modules/npm/lib/utils/spawn.js:40:14)
  14 verbose stack     at emitTwo (events.js:106:13)
  14 verbose stack     at ChildProcess.emit (events.js:191:7)
  14 verbose stack     at maybeClose (internal/child_process.js:877:16)
  14 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
  15 verbose pkgid apicalltestapp@0.1.0
  16 verbose cwd /Users/dswork/Coding/reactcafe
  17 error Darwin 15.6.0
  18 error argv "/Users/dswork/.nvm/versions/node/v6.7.0/bin/node" "/Users/dswork/.nvm/versions/node/v6.7.0/bin/npm" "start"
  19 error node v6.7.0
  20 error npm  v3.10.8
  21 error code ELIFECYCLE
  22 error apicalltestapp@0.1.0 start: `react-scripts start`
  22 error Exit status 1
  23 error Failed at the apicalltestapp@0.1.0 start script 'react-scripts start'.
  23 error Make sure you have the latest version of node.js and npm installed.
  23 error If you do, this is most likely a problem with the apicalltestapp package,
  23 error not with npm itself.
  23 error Tell the author that this fails on your system:
  23 error     react-scripts start
  23 error You can get information on how to open an issue for this project with:
  23 error     npm bugs apicalltestapp
  23 error Or if that isn't available, you can get their info via:
  23 error     npm owner ls apicalltestapp
  23 error There is likely additional logging output above.
  24 verbose exit [ 1, true ]
  </code></pre>