utl_file.invalid_path

I am facing problem in executing the package
ORA-06510: PL/SQL: unhandled user-defined exception

ORA-06512: at "SYS.UTL_FILE", line 534

ORA-06512: at "SYSTEM.MYDEBUG", line 56

ORA-06512: at "SYSTEM.MYDEBUG", line 66

ORA-06512: at line 3

 
My package is
============
CREATE OR REPLACE PACKAGE Mydebug AS
   
        -- Define a variable to hold the file id for all debugging actions.
        FileId utl_file.file_type;
     
     
     -- This procedure will initialise the debugging system by opening the debugging file. You
     -- could add more stuff here if you wish.
     PROCEDURE Initialise(iPath IN VARCHAR2, iFile IN VARCHAR2, iBuffer IN NUMBER := 256);
   
    -- This procedure terminates the debugging system - simply by closing whichever file is open.
    -- Although UTL_FILE allows a number of files to be open at any time, this is a simple
    -- system and only has a single debugging file.
    PROCEDURE TERMINATE;
   
    -- And the guts of the package is this simple procedure to send whatever is passed to it,
    -- straight out to the logging file. The option to flush the buffer contents is provided.
    PROCEDURE debug_out(iText IN VARCHAR2, iFlush IN BOOLEAN := FALSE);
     PROCEDURE Test(File IN VARCHAR2);
   
   END;
/
CREATE OR REPLACE PACKAGE BODY Mydebug AS
       -- Define a variable to hold the file id for all debugging actions.
        -- FileId utl_file.file_type;
     
     
     -- This procedure will initialise the debugging system by opening the debugging file. You
     -- could add more stuff here if you wish.
     PROCEDURE Initialise(iPath IN VARCHAR2, iFile IN VARCHAR2, iBuffer IN NUMBER := 256)
    AS
    BEGIN
       Dbms_Output.put_line('ipath = '||iPath ||'File '||iFile);
       Mydebug.FileId := utl_file.fopen(iPath, iFile, 'W', iBuffer);
       Mydebug.debug_out('Debugging session begins at ' || TO_CHAR(SYSDATE));    
    EXCEPTION
         WHEN utl_file.invalid_path THEN
           Dbms_Output.put_line('utl_file.invalid_path');
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_path');
         WHEN utl_file.invalid_mode THEN
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_mode');
           DBMS_OUTPUT.put_line('utl_file.invalid_mode');
         WHEN utl_file.invalid_filehandle THEN
            DBMS_OUTPUT.put_line('utl_file.invalid_filehandle');
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_filehandle');
         WHEN utl_file.invalid_operation THEN
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.invalid_operation');
           DBMS_OUTPUT.put_line('utl_file.invalid_operation');
         WHEN utl_file.read_error THEN
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.read_error');
           DBMS_OUTPUT.put_line('utl_file.read_error');
         WHEN utl_file.write_error THEN
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.write_error');
           DBMS_OUTPUT.put_line('utl_file.write_error');
         WHEN utl_file.internal_error THEN
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.internal_error');
           DBMS_OUTPUT.put_line('utl_file.internal_error');
         WHEN OTHERS THEN
           --RAISE_APPLICATION_ERROR(-20001, 'utl_file.other_error');
           DBMS_OUTPUT.put_line('utl_file.other_error');
       END;
   
    -- This procedure terminates the debugging system - simply by closing whichever file is open.
    -- Although UTL_FILE allows a number of files to be open at any time, this is a simple
    -- system and only has a single debugging file.
    PROCEDURE TERMINATE
    AS
    BEGIN
       Mydebug.debug_out('Debugging session terminated at ' || TO_CHAR(SYSDATE));
       utl_file.fclose(Mydebug.FileId);
    END;
   
    -- And the guts of the package is this simple procedure to send whatever is passed to it,
    -- straight out to the logging file. The option to flush the buffer contents is provided.
    PROCEDURE debug_out(iText IN VARCHAR2, iFlush IN BOOLEAN := FALSE)
    AS
    BEGIN
       utl_file.put_line(Mydebug.FileId, iText);
       IF (iFlush) THEN
         utl_file.fflush(Mydebug.FileId);
       END IF;
    END;
    PROCEDURE Test(File IN VARCHAR2)
    AS
    BEGIN
         Mydebug.INITIALISE('e:\TrueUpData\',File);
       FOR something IN 1..100 LOOP
         Mydebug.DEBUG_OUT('Currently processing record : ' || TO_CHAR(something));
       END LOOP;
 
       Mydebug.TERMINATE;
   END;    
   
   END;
/

My test file is
=========
declare
  -- Local variables here
  i integer;
begin
  Mydebug.Test('test.log');
  end;


My package is pretty simple.
I have the directory and i have the permissions.
I am on Win2000 server.

Can anyone help me with this.

Thanks
Deepak