[Gtk-sharp-list] libglade-WARNING **: unknown property `size' for class `GtkVBox'

[Julien Sobrier]

Hello,
I've create a project with glade 3. It contains a couple of VBox and HBox

I get this error when I execute the program:
libglade-WARNING **: unknown property `size' for class `GtkVBox'

The .glade file contains the property "size" for GtkVBox. If I remove
it, the window is not displayed.

Any idea why this problem occur? I'm using gtk-sharp-2.0 and Mono 1.1.13


Thank you
Julien