perl/Gtk2: issue with initializing Gtk2

hi everybody,
currently i'm playing with perl and Gtk2.
i've found a fairly old but nice looking example of a client/server application which is written in perl and Gtk2.
the server part works perfect but i can't start the client part and keep getting following error message:

$ ./client-gui.pl
Usage: init(class=NULL) at ./client-gui.pl line 35.
$

client-gui.pl line 35:

Gtk2->init(\@ARGV);

the complete code for client-gui.pl can be found here:
http://techrepublic.com.com/html/tr/sidebars/1058741-4.html

if you want/need to see the whole article follow this link:
Build complex GUI applications with Gtk2-Perl

can anybody help me?

kind regards
pc

you may find it easier to use Glade to design your GUI
and then
use Gtk2::GladeXML;
to read the glade file.

that's what I do.
though gtk is a world of hurt.
terrible documentation, esp. for perl.