+ if (!_session || _session->deletion_in_progress()) {
+ /* may be called from session d'tor, removing monitor-section w/plugin */
+ return;
+ }
+
+ _session->RouteAdded.connect (
+ _route_connections, invalidator (*this), boost::bind (&PluginDSPLoadWindow::refill_processors, this), gui_context()
+ );
+