Hey all,

I'm having a problem instantiating the UI of the parametric EQ by Nedko & Fons. ( http://nedko.arnaudov.name/soft/lv2fil/trac/wiki/WikiStart )

I can instantiate the Invada suite no problem. They have a  http://lv2plug.in/ns/extensions/ui#GtkUI  type UI & the host is also Gtk.

    instance = suil_instance_new(    suilHost,
                                    0, // pass a pointer to the controller objects here
                                    "http://lv2plug.in/ns/extensions/ui#GtkUI",           // target UI widget type
                                   
                                    "http://nedko.aranaudov.org/soft/filter/2/mono",    // plugin URI
                                    "http://nedko.aranaudov.org/soft/filter/2/gui",        // plugin UI URI
                                    "http://lv2plug.in/ns/extensions/ui#external",        // plugin UI TYPE URI
                                    "/usr/lib/lv2/filter.lv2/",                                        // plugin UI bundle
                                    "/usr/lib/lv2/filter.lv2/filter.so",                             // plugin UI binary
                                   
                                    &featureArray[0]);                                              // supported features by host
   
    // get widget of the UI instance
    SuilWidget widget = suil_instance_get_widget(instance);
   
    // add widget to container, casting "SuilWidget" to "GtkWidget*" as the target UI type is ui#GtkUI
    gtk_container_add (GTK_CONTAINER ( hbox->gobj() ), (GtkWidget*) widget);

The error I get (at runtime) is the following:
error: get_wrap_module: Unable to wrap UI type <http://lv2plug.in/ns/extensions/ui#external> as type <http://lv2plug.in/ns/extensions/ui#GtkUI>
error: suil_instance_new: Failed to instantiate UI <http://nedko.aranaudov.org/soft/filter/2/gui> in /usr/lib/lv2/filter.lv2/filter.so

Would anybody shed some light onto what I'm doing wrong?
Cheers, -Harry