1. Tk::Error: Undefined subroutine &main::do_Toplevel called

2. You essentially wrote

    if ( !Exists( $t1 ) ) {
        $t1 = $mw->Toplevel();
            sub  {
# bunch of code that can never get called
        }
    }

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In reply to Re^2: error:not a Tk object error, please help. by Anonymous Monk
in thread error:not a Tk object error, please help. by henry888

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