Hi eoin. With pop-up dialogs like this which the user may open and close several times, it's often a good idea to hold onto them and not create and destroy them each time. So if you say this within sub load:

   $open->withdraw();
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And also test in the routine where you create $open:

   if (defined $open) {
      $open->deiconify();
   } else {
      # create the dialog window here
   }
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That should do the trick. Make sure $open is a my variable at the top scope level instead of just within the routine, of course.