title: NPM wont run due to EEXIST error
body: <p>No matter what I do with <code>npm</code>, remove it, re-install it, re-hash, etc, i still get this error when I try to run anything related to <code>npm</code>:</p>
  
  <pre><code>prompt$  npm
  
  ------
  
  npm ERR! EEXIST, mkdir '/usr/local/bin/npm'
  File exists: /usr/local/bin/npm
  Move it away, and try again. 
  </code></pre>
  
  <p>What is the problem and how do I fix it?</p>
  
  <p>I've deleted:</p>
  
  <pre><code>/usr/local/bin/node
  /usr/local/bin/npm
  ~/.npm
  </code></pre>
  
  <p>then reinstalled. still receiving the same error.</p>