title: Codeblocks showing building error popup
body: <p>I am trying to compile a simple hello world program but codeblocks(v 13.12) is always showing me <code>It seems that this file has not been built yet.Do you want to build it now?</code></p>
  
  <p>I'd used codeblocks(v 13.12) before but never found this problem. I don't know how to solve it. Anybody please help me.</p>
  
  <p><img src="https://i.stack.imgur.com/KLnfL.png" alt="build error message"></p>
  
  <p>Image after creating a project: <img src="https://i.stack.imgur.com/KrKNH.png" alt="after project"></p>