title: p4merge error [GIT]
body: <p>I am trying to use p4merge with git but I am getting: </p>
  
  <p><strong>Error starting p4merge: "path/myFile" is (or points to) an invalid file</strong> (this lists the BASE, LOCAL, REMOTE, and standard version of the file).</p>
  
  <p>Git tells me about the conflict then it asks if I wanna start the mergetool configured (p4merge) and then I get the error above.</p>
  
  <p>Additional note: it happens with any file!</p>
  
  <p>Any clue about what this is and how to fix it?</p>