pg's code worked for me, but maybe you need to explicitly created a scrolled Pane. He created a Scrolled Frame, which seem to automatically work on latest version of Perl and Tk on linux, but maybe on Windows or other Tk versions, its a problem?

use Tk;
use Tk::Pane;

.....snip....

## Create Frame of elements
my $frame= $mw->Scrolled('Pane',
                        -relief => 'groove',
                        -bd => 1, -scrollbars=>"se");
  $frame->pack(-fill => 'both', -expand => 1);
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