Bitrh, life and death of an instance of a class

/* ***************************  Main Block  *************************** */

/* Set CURRENT-WINDOW: this will parent dialog-boxes and frames.        */
ASSIGN CURRENT-WINDOW                = {&WINDOW-NAME} 
       THIS-PROCEDURE:CURRENT-WINDOW = {&WINDOW-NAME}.

/* The CLOSE event can be used from inside or outside the procedure to  */
/* terminate it.                                                        */
ON CLOSE OF THIS-PROCEDURE 
    DO:
        DELETE OBJECT oFingerPrint. 
        RUN disable_UI.
    END.
/* Best default for GUI applications is...                              */
PAUSE 0 BEFORE-HIDE.

/* Now enable the interface and wait for the exit condition.            */
/* (NOTE: handle ERROR and END-KEY so cleanup code will always fire.    */
MAIN-BLOCK:
DO ON ERROR   UNDO MAIN-BLOCK, LEAVE MAIN-BLOCK
    ON END-KEY UNDO MAIN-BLOCK, LEAVE MAIN-BLOCK:
        
    oFingerPrint = NEW BioLogin ( ) .
        
    RUN enable_UI.
   
    
    IF NOT THIS-PROCEDURE:PERSISTENT THEN
        WAIT-FOR CLOSE OF THIS-PROCEDURE.
END.

If you pay attention, this is (part of) the basic construct of a .W with a sligth modification on the ON CLOSE trigger.

I'm using the answer from [mention:43713cf888d84bdcb3637e465ffa1de6:e9ed411860ed4f2ba0265705b8793d05] to community.progress.com/.../30139, to look under the hood...and found this:

[17/03/04@13:16:25.249-0600] P-022988 T-027640 2 4GL 4GLTRACE Run procs\Nom\Nom07001.w [USER-INTERFACE-TRIGGER - procs\men\sch_virt.w @ 870]
[17/03/04@13:16:25.254-0600] P-022988 T-027640 2 4GL 4GLTRACE New procs.Bio.BioLogin [Main Block - procs\Nom\Nom07001.w @ 477]
[17/03/04@13:16:25.254-0600] P-022988 T-027640 2 4GL 4GLTRACE Invoke InitializeComponent [BioLogin - procs.Bio.BioLogin @ 86]
[17/03/04@13:16:25.261-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from InitializeComponent [procs.Bio.BioLogin]
[17/03/04@13:16:25.261-0600] P-022988 T-027640 2 4GL 4GLTRACE Invoke InicializaScanner [BioLogin - procs.Bio.BioLogin @ 88]
[17/03/04@13:16:26.287-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from InicializaScanner [procs.Bio.BioLogin]
[17/03/04@13:16:26.287-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from BioLogin [procs.Bio.BioLogin]
[17/03/04@13:16:26.287-0600] P-022988 T-027640 2 4GL 4GLTRACE Run enable_UI [Main Block - procs\Nom\Nom07001.w @ 479]
[17/03/04@13:16:26.306-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from enable_UI [procs\Nom\Nom07001.w]
[17/03/04@13:16:26.306-0600] P-022988 T-027640 2 4GL 4GLTRACE Run CargaDatos [Main Block - procs\Nom\Nom07001.w @ 481]
[17/03/04@13:16:26.313-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from CargaDatos [procs\Nom\Nom07001.w]
[17/03/04@13:16:29.879-0600] P-022988 T-027640 2 4GL 4GLTRACE Delete BioLogin [USER-INTERFACE-TRIGGER - procs\Nom\Nom07001.w @ 465]
[17/03/04@13:16:29.971-0600] P-022988 T-027640 1 4GL -- (Procedure: 'BioLogin procs.Bio.BioLogin' Line:567) Se dió un valor de "handle" inválido o inapropiado para la sentencia DELETE OBJECT o DELETE PROCEDURE. (5425)
[17/03/04@13:16:29.971-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from BioLogin [procs.Bio.BioLogin]
[17/03/04@13:16:29.971-0600] P-022988 T-027640 2 4GL 4GLTRACE Run disable_UI [USER-INTERFACE-TRIGGER - procs\Nom\Nom07001.w @ 466]
[17/03/04@13:16:29.984-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from disable_UI [procs\Nom\Nom07001.w]
[17/03/04@13:16:29.984-0600] P-022988 T-027640 3 4GL 4GLTRACE Return from Main Block [procs\Nom\Nom07001.w]

when I call the uib window that creates NEW BiolLogin(). and just close it....

I'm worried about (5425), as this program hangs randomly after 2 consecutive runs....