Index: trunk/src_plugins/hid_gtk/gui-netlist-window.c
===================================================================
--- trunk/src_plugins/hid_gtk/gui-netlist-window.c	(revision 2376)
+++ trunk/src_plugins/hid_gtk/gui-netlist-window.c	(revision 2377)
@@ -186,6 +186,11 @@
 {
 	GtkTreeModel *model;
 
+	if (menu == NULL) {
+		Message("Error: can't update netlist window: there is no netlist loaded.\n");
+		return;
+	}
+
 	model = node_model;
 	node_model = node_model_create(menu);
 	gtk_tree_view_set_model(node_treeview, node_model);