[Gommeke]

This thread sounds like in the right direction to solve my php-error-log

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in O:\FOO\www\includes\class_core.php on line 694
Date: Tuesday 21st of February 2006 09:28:28 PM
Username: Niet geregistreerd
IP Address: 66.249.65.47

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Warning: mysql_free_result(): supplied argument is not a valid MySQL result resource in O:\FOO\www\includes\class_core.php on line 744
Date: Tuesday 21st of February 2006 09:28:28 PM
Username: Niet geregistreerd
IP Address: 66.249.65.47

Referring to this line in class_core.php
694

return @$this->functions['fetch_array']($queryresult, $this->fetchtypes["$type"]);
}

and 744

return @$this->functions['free_result']($queryresult);