Running into render View not found error?

See this article

http://3dg.me/3d-graphics/maya/fix-for-maya-2012-error-setparent-object-renderview-not-found

mel script:

$exists=0;
 for ($item in `getPanel -scriptType "renderWindowPanel"`) {
  if ( $item == "renderView" ) {
   print "renderView exists.\n";
   $exists=1;
  }
 }
 if ( $exists == 0 ) {
  for ($item in `getPanel -scriptType "renderWindowPanel"`) {
   //print ( $item + "\n");
   if ( $item == "renderWindowPanel1" ) {
   deleteUI renderWindowPanel1;
   $renderPanel = `scriptedPanel -type "renderWindowPanel" -unParent renderView`;
   scriptedPanel -e -label `interToUI $renderPanel` $renderPanel;
   }
  }
 }