title: kcachegrind unable to open callgrind file
body: <p>I'm using callgrind to profile a small piece of code. Callgrind output files are well generated, their content looks ok, but I'm unable to open them with kcachegrind: I get the following error message:</p>
  
  <blockquote>
    <p>Could not open file "callgrind.out.4953". Check it exists and you have enough permissions to read it.</p>
  </blockquote>
  
  <p>I have all permissions on files and directories they are in, but with the same issue. Also, it works well with an other project, in an other folder in the same workspace. I also precise that the processes terminate correctly in both cases.</p>