Just 4 steps are necessary to make WebAmoeba work with Joomla 1.5 in Legacy Mode.

1. Add the following at the very top of waticketsystem.php : global $watsCategorySet, $wats, $watsUser, $Itemid, $watsDatabase;

2. Change "$watsDatabase =& $database;" to "$watsDatabase = $database;" in admin.waticketsystem.php on line 20

3. Add the following at the very top of admin.waticketsystem.php : global $wats, $watsDatabase; function mosWarning($text) { return $text; };

4. Remove line 1109 ("require_once( '../includes/version.php' );") from admin.waticketsystem.html.php