[Mimedefang] Graphdefang not graphing virus types

[Joe Arnstein]

Hi folks,

I just got Graphdefang 0.9 running but I'm having some problems with one
of the graph types.  The total count of viruses and top 9 senders of
viruses show up OK, but Graphdefang generates an empty .png file for the
list of virus types (daily/hourly/monthly virus_value1_stacked_bar.png)

snip from graphdefang-config:

%GraphSettings = ();
%GraphSettings = (
        'data_types'    => ['virus'],
        'graph_type'    => 'stacked_bar',
        'grouping'      => 'value1',
        'value1_title'  => 'VirusName',
        'grouping_times'=> ['hourly','daily','monthly'],
        #'filter'       => '^(?:(?!klez).)*$',
        #'filter_name'   => 'Not Klez',
        );
push @GRAPHS, { %GraphSettings };


snip from log:
May 13 18:46:36 server1 mimedefang.pl[6438]:
MDLOG,i4DMngVX022386,virus,W32/Bagle.j at MM,65.100.10.44,<bogus at somedomain
.com>,<whoever at mydomain.com>,Important notify about your e-mail account.

Can anyone point me in the right direction to get it working?

Thanks,
Joe Arnstein