Well thanks, Alex, but all I get is a messagebox with message "Poc: On ...", and that's it

which means to me that we're now in an ON ... situation, which I know because I've just put it there! :-)

>Hi Terry just put this in your error routine
>

>LOCAL lni, llterm, lcproc, lcmessage
>lni = 1
>llterm = .f.
>lcmessage = ''
>DO WHILE !llterm
>	lcproc = PROGRAM(lni)
>	IF !EMPTY(lcproc)
>		lni = lni + 1
>		lcmessage = lcmessage + ' proc: ' + lcproc + CRLF
>	ELSE
>		llterm = .t.
>	ENDIF
>ENDDO
>MESSAGEBOX(lcmessage)
>

>This will show you the entire call stack.
>>
>>Hi Eddie
>>
>>"rtefam.eroute,start_date,end_date,family,avjval"
>>
>>First thing I checked was the combo's props for any mention of Thisform or ref to something that might ref it. Besides, it was working fine till I put this other code in various places in the form.
>>
>>Thanks