glade 3.10 (as opposed to 3.7) now creates files with GtkBox with
property direction (as opposed to GtkHBox and GtkVBox). The same with
GtkButtonBox (and probably split).
ruby-gtk2 1.0.0-1 crashes on reading those.
GLib-GObject-WARNING **:cannot create instance of abstract
(non-instantiatable) type `GtkButtonBox’
testcombo.rb:24: [BUG] Segmentation fault
ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]