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Tengo 1 .prg que me trabaja bien bajo FW 16bit, ahora que lo pase a FWH 32bits, en _ de validacion numerica da este error:
Application
===========
Path and name: C:\SISINGE\FARMACIA\FARMACIA.EXE (32 bits)
Size: 1,228,800 bytes
Time from start: 0 hours 1 mins 15 secs
Error occurred at: 02/06/2006, 00:22:58
Error description: Error BASE/1110 Argument error: SUBSTR
Args:
[ 1] = U
[ 2] = N 1
[ 3] = N 1

Stack Calls
===========
Called from SUBSTR(0)
Called from GET:UNTRANSFORM(604)
Called from TWINDOW:LOSTFOCUS(0)
Called from TWINDOW:KILLFOCUS(0)
Called from TWINDOW:HANDLEEVENT(0)
Called from _FWH(0)
Called from SETFOCUS(0)
Called from TWINDOW:GONEXTCTRL(0)
Called from TWINDOW:KEYCHAR(0)
Called from TWINDOW:HANDLEEVENT(0)
Called from TWINDOW:HANDLEEVENT(0)
Called from _FWH(0)
Called from DIALOGBOX(0)
Called from TDIALOG:ACTIVATE(0)
Called from FICHAPRODU(643)
Called from EVAL(92)
Called from TBTNBMP:CLICK(0)
Called from TWINDOW:LBUTTONUP(0)
Called from TWINDOW:HANDLEEVENT(0)
Called from TWINDOW:HANDLEEVENT(0)
Called from _FWH(0)
Called from DIALOGBOX(0)
Called from TDIALOG:ACTIVATE(0)
Called from DATINVENTA(250)
Called from EVAL(155)
Called from TC5MENU:COMMAND(716)
Called from TWINDOW:COMMAND(0)
Called from TWINDOW:COMMAND(0)
Called from TWINDOW:HANDLEEVENT(0)
Called from _FWH(0)
Called from WINRUN(0)
Called from TWINDOW:ACTIVATE(0)
Called from MAIN(100)
que deberia revisar? gracias....

Jose Luis,

Podrías proporcionarnos un ejemplo pequeño y autocontenido que genere el problema también ?

Que versión/build de FWH y Harbour/xHarbour usas ?