PL/SQL - Trigger gets UTL_FILE.INVALID_PATH

[Quoted] I am trying to use the UTL_FILE.FOPEN, and I get the invalid path error, even though the D:\ORANT\BWVAUDIT directory is in the Oracle ini file. code follows...Any ideas?

CREATE OR REPLACE TRIGGER tbw009_log_trigger AFTER DELETE OR UPDATE ON tbw009_cust
FOR EACH ROW
DECLARE

	audit_file UTL_FILE.FILE_TYPE;
	file_dir varchar2(255) := 'D:\ORANT\BWVAUDIT\';
	file_name varchar2(255) := 'TBW009.AUD';
	file_write varchar2(1) := 'w';

BEGIN
	DBMS_OUTPUT.PUT_LINE ('Entering the logic.');
	audit_file := UTL_FILE.FOPEN(file_dir, file_name, file_write);
               		
	IF UTL_FILE.IS_OPEN(audit_file) THEN
		UTL_FILE.PUT_LINE(audit_file,
			'this line is being added');
	END IF;

EXCEPTION
	WHEN UTL_FILE.INVALID_PATH THEN
	DBMS_OUTPUT.PUT_LINE ('Invalid Path.');

	WHEN UTL_FILE.INVALID_MODE THEN
	DBMS_OUTPUT.PUT_LINE ('Invalid Mode.');

	WHEN UTL_FILE.INVALID_OPERATION THEN
	DBMS_OUTPUT.PUT_LINE ('Invalid Operation.');

END; Received on Mon Mar 02 1998 - 00:00:00 CET