/* Add master bus and then everything else */
- ARDOUR::IO* master = _session->master_out()->output().get();
- channel_view.add_route (master);
+ if (_session->master_out()) {
+ ARDOUR::IO* master = _session->master_out()->output().get();
+ channel_view.add_route (master);
+ }
for (RouteList::iterator it = routes.begin(); it != routes.end(); ++it) {
if ((*it)->is_master () || (*it)->is_monitor ()) {