title: Cannot open output file in qt
body: <p>I'm working with Qt Creator 2.4.1 and I faced with one really annoying problem.</p>
  
  <p>When I debug my project, I get following the error very often:</p>
  
  <pre><code>:-1: error: cannot open output file debug\qtrbdclient.exe: Permission denied
  :-1: error: collect2: ld returned 1 exit status
  </code></pre>
  
  <p>The only way to solve it is to close Qt Creator and run it again. I really can't understand why it happens again and again.</p>