title: could not open git/commit_editmsg
body: <p>I have a git repository linked to a dropbox folder.
  Recently, I have switched my laptop to another, and now i can not perform the function "git commit -am". I keep getting this error message:
  "could not open '.git/COMMIT_EDITMSG': Permission denied.</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks,
  Liron  </p>