failed to import

Hello,
Just started playing around with PHP-objc, the hello_window.php is  
throwing the following error when I execute it:
-=[~/Scripts/compile/php-objc/samples]=- -=[Sun Nov 04]=- -=[15:11:22]=-
[adam@adam]$ php hello_window.php
failed to import

Fatal error: Call to undefined method  
NSResponder::initWithContentRect_styleMask_backing_defer_() in /Users/ 
adam/Scripts/compile/php-objc/samples/hello_window.php on line 9


I am running a custom-compiled PHP 5.2.4 on 10.5.0.

Any ideas what I am doing wrong?


-Adam