title: qt - creator: random execution of not the right binary file
body: <p>I want to share a problem that randomly appears with the Qt creator IDE.</p>
  
  <p>Sometimes, when I compile and execute the code, even doing QMake and cleaning the code (even manually), the binary that is being executed, is not the right one. </p>
  
  <p>It seems that an old version is being executed. Usually this problem arises when I have two projects opened (with two qtcreator windows) and one of them calls the binary created by the other.</p>
  
  <p>Have you ever experienced a similar problem? if so, how do you deal with it?</p>
  
  <p>Cheers</p>