cannot include grid_connector.php

I’m trying to make a connection with a mysql database, but having problems with the grid_connector.php. Does anybody have a clue?

Warning: require_once(/codebase/grid_connector.php) [function.require-once]: failed to open stream: No such file or directory in D:\home…\creditor\connector.php on line 3

Fatal error: require_once() [function.require]: Failed opening required ‘/codebase/grid_connector.php’ (include_path=’.;C:\xampp\php\PEAR’) in D:\home…\creditor\connector.php on line 3

It seems that required php files can’t be located
Be sure to copy all php files from connector’s package ( while you include only one on the page, other files still necessary )

Nothing to do with DHTMLX, was a basic PHP.ini setting. Sorry.