Gtk::Builder::create_from_file throwing bad exception

[AlbanoBerg <marco mx hotmail com>]

hi all
i am trying to code a test application using gtkmm
when i try to load the .glade file i get this:

(UI:2038): GLib-GObject-CRITICAL **: g_object_set_qdata_full: assertion
`quark > 0' failed

(UI:2038): glibmm-WARNING **: Glib::Error::throw_exception():
  unknown error domain 'gtk-builder-error-quark': throwing generic
Glib::Error exception

terminate called after throwing an instance of 'Glib::Error'


and the program exits.

the line throwing the exception is:

Glib::RefPtr<Gtk::Builder> builder =
Gtk::Builder::create_from_file("/home/user/glade_test/test.glade");

i am on linux using gtkmm 2.4
i don't understand where the problem is,
anyone can help??

thanks in advance



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