webtechnick/CakePHP-Facebook-Plugin — pull request #112 by krolow (2013-01-02 23:11:09+00:00)
Title: Changing to works properly PHP 5.3 >

I was using the plugin in PHP 5.4 and the callbacks seems to not be working the reason was because the check is_callable, so i changed it to method_exists and it should work properly with the new versions of PHP

That issue was also mentioned in the issues #99