I'm in need of HELP on this. I'm receving a Fatal error: Call to undefined method HTML_mailinglist::showAvailableMailingLists() in C:\xampp\htdocs\joomla15\components\com_mailinglist\mailinglist.php on line 311

My mailman administrator settings do locate and display the one list I have in mailman named sample_mydomain.com. I created a group with a joomla user named Liam and added to the group.

Creating the menu for 'Mailman Admin' I named it elist

My mailman under cpanel is http://mydomain.com/mailman

When I use the menu item elist I receive the 'Fatal error: Call to undefined method HTML_mailinglist::showAvailableMailingLists() in C:\xampp\htdocs\joomla15\components\com_mailinglist\mailinglist.php on line 311'

I'm using PHP 5.3.1 on XAMPP 1.7.3 for Windows on my PC and mailman version 2.1.12.cp3