Your version of ATS is not compatible with the FOF version included in Joomla! 3.2.x. Sorry, you'll have to upgrade PHP and your ATS version. It's a good idea upgrading PHP anyway. The version you have was released on July 22nd 2010. That's three and a half years ago. In computer terms, that's an entire lifetime. In the intermediate 25 (yes, twenty five) versions of PHP 5.3 which have been released in those three and a half years there were hundreds of bugs fixed and several security issues patched. You really don't want to run this kind of antiquated PHP version on a live site. If I have not yet convinced you, please note that on PHP 5.3.9 and lower Joomla! uses an insecure, relatively easy to crack encryption method for passwords. Upgrade, for your own security above anything else!
Nicholas K. Dionysopoulos
Lead Developer and Director
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