Gtk2 on windows xp: libglade warning

[RAPPAZ Francois <francois rappaz unifr ch>]

At the end, I follow the setup proposed here

http://lostmind.de/gtk2-perl/

and with this modification
http://mail.gnome.org/archives/gtk-perl-list/2006-May/msg00054.html

I got my application appearing on the screen. 

But still the error message
(perl.exe:3144): libglade-WARNING **: unknown property `orientation' for class ` GtkVBox'

Thanks for any help

François