R help - Jul 2004 - Tcl/Tk and R

Hi!!

I'm using the R package tcltk. See the stretch of code below:
>tbn1 = tclvalue(tkadd(tn,label="Modify Data"))
>tkpack(tbw1 <- .Tk.newwin(tbn1))
>tkpack(fr1 <- tkframe(tbw1))
>tkpack(lb1<- tkwidget(fr1,"iwidgets::labeledframe"))
When I try to execute this I have this error at the last line:

Error in structure(.External("dotTclObjv", objv, PACKAGE =
"tcltk"), class =
"tclObj") :
        [tcl] can't find usual code for tag "Frame".

Please help me!!

Thank's

Talita Perciano Costa Leite
Graduanda em Ci??ncia da Computa????o
Universidade Federal de Alagoas - UFAL
Departamento de Tecnologia da Informa????o - TCI
Constru????o de Conhecimento por Agrupamento de Dados - CoCADa