Error Loading ChartDirector for PHP Extension

An attempt has been made to dynamically load ChartDirector, but it was not successful. Please refer to your ChartDirector for PHP documentation or click here for how to resolve the problem.

Error Log

Trying to load "phpchartdir520.dll" from the PHP extension directory "/usr/local/lib/php/extensions/".

dl(): Unable to load dynamic library '/usr/local/lib/php/extensions/phpchartdir520.dll' - Cannot open "/usr/local/lib/php/extensions/phpchartdir520.dll"

Also trying to load "phpchartdir520.dll" from "/usr/home/share/bigli/libraries/ChartDirector/lib".

dl(): Temporary module name should contain only filename

System Information

Operating System : FreeBSD bigli.ru 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan 12 11:05:30 UTC 2007 root@dessler.cse.buffalo.edu:/usr/obj/usr/src/sys/SMP i386
PHP version : 5.2.10
PHP / Web Server interface : apache
PHP configuration file location : "/usr/local/lib/php.ini"
PHP extension directory : "/usr/local/lib/php/extensions/"