after this line: if ($sefConfig->page404 == '0') 
...
...
 
$Itemid = $id; /planlos: WRONG, so i enabled it again..../*null; /*Beat: was wrong: =$id : the $Itemid represents the menuId, and $id the contentId ! */
                    $_SERVER['QUERY_STRING'] = \"option=com_content&task=view&id=$id&Itemid=$id&mosmsg=$mosmsg\";
                    $_SERVER['REQUEST_URI'] = $GLOBALS['mosConfig_live_site'].\"/index.php?\".$_SERVER['QUERY_STRING'];
                    $_GET['option'] = $_REQUEST['option'] = $option;
                    $_GET['task'] = $_REQUEST['task'] = $task;
 
/*                    $_GET['Itemid'] = $_REQUEST['Itemid'] = $Itemid;*/ /*Planlos: das war doch richtig/*Beat: was wrong: */
                    $_GET['Itemid'] = $_REQUEST['Itemid'] = $Itemid;
 
/*Planlos:  wegdamit sonst kann joomla die 404 nicht öffnen:   
/*                  unset($_GET['Itemid']);  */
/*                  unset($_REQUEST['Itemid']); */