Yes, power cms uses security assist, for displaying the live edit button, this will create 2 helper group rules files.
the work around is to make a backup copy of the PowerCMS/WA_CMS/WA_CMS.php file, save it as WA_CMS2.php
In the backup version, comment out line 5:
//require_once( "../WA_SecurityAssist/Helper_PHP.php" );
on your pages with security assist applied, change the following from the developer notes:
<?php include("PowerCMS/WA_CMS/WA_CMS.php"); ?>
<?php include("PowerCMS/WA_CMS/WA_CMS2.php"); ?>