Hi, Claudio.

>WITH THIS.PARENT
>   lcLoginName = ALLTRIM(.txtLoginName.VALUE)
>   SELECT iID, cLoginName, mSenha FROM Usuarios;
>   WHERE ALLTRIM(cLoginName) == lcLoginName;
>   INTO CURSOR curTempUsuario
>    IF _Tally > 0
>        IF ALLTRIM(curTempUsuario.mSenha) == ALLTRIM(.txtSenha.VALUE)
>           PUBLIC oUsuario
>           oUsuario = CREATEOBJECT("cusUsuario",curTempUsuario.iID)
>           .Release
>...etc..

Where is oUsuario defined? If you didn't defined somewhere else, the variable will loose scope at the end of this method and would be released.

Of course, I suppose it is defined as private or public before as you say that it works on Win9x.