title: Error Installing Ionic On Windows
body: <p>I have node, npm, and cordova installed on a Windows 7 box.  However, when I run</p>
  
  <pre><code>npm install -g ionic
  </code></pre>
  
  <p>I receive the following error:</p>
  
  <pre><code>C:\Users\me&gt;npm install -g ionic
  loadRequestedDeps → after ▌ ╢███████████████████████████░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░╟
  Assertion failed: ctx-&gt;mode_ != NONE &amp;&amp; "already finalized", file src\node_zlib.cc, line 147
  
  
  C:\Users\me&gt;node -v
  v0.12.5
  
  C:\Users\me&gt;npm -v
  3.0.0
  
  C:\Users\me&gt;cordova -v
  5.1.1
  </code></pre>
  
  <p>What can I do to fix this error?</p>