title: Cannot determine build data storage root for project error IntelliJ Android
body: <p>I am trying to build an android application I coded, and I get the following error:</p>
  
  <pre><code>Error:build: Cannot determine build data storage root for project /Users/Flo/Programming/Android/workspace/&lt;ProjectName&gt;
  </code></pre>
  
  <p>I have marked <code>src</code> and <code>gen</code> as <code>source folders</code>, and <code>res</code> as <code>resource folder</code>.</p>
  
  <p>Any help? Thanks!</p>