in getxls.php the path should be in variables.inc
require_once "../../../include/utils/excel/class.writeexcel_workbook.inc.php"; require_once "../../../include/utils/excel/class.writeexcel_worksheet.inc.php";
the path should be in variables.inc
(from redmine: issue id 625, created on 2012-02-22, closed on 2012-02-24)