fix stem-export of no-input busses/tracks

diff --git a/gtk2_ardour/export_channel_selector.cc b/gtk2_ardour/export_channel_selector.cc
index 17c54c79a85b735bd77284eb2d1ec242582442df..59720ecb3e6b56a60997f339db5c9749bcabe0eb 100644 (file)
--- a/gtk2_ardour/export_channel_selector.cc
+++ b/gtk2_ardour/export_channel_selector.cc
@@ -710,7 +710,7 @@ TrackExportChannelSelector::update_config()
                        continue;
                }
 
-               ExportProfileManager::ChannelConfigStatePtr state = manager->add_channel_config();
+               ExportProfileManager::ChannelConfigStatePtr state;
 
                boost::shared_ptr<Route> route = row[track_cols.route];
 
@@ -722,16 +722,25 @@ TrackExportChannelSelector::update_config()
                                        ExportChannelPtr channel (new PortExportChannel ());
                                        PortExportChannel * pec = static_cast<PortExportChannel *> (channel.get());
                                        pec->add_port(port);
+                                       if (!state) {
+                                               state = manager->add_channel_config();
+                                       }
                                        state->config->register_channel(channel);
                                }
                        }
                } else {
                        std::list<ExportChannelPtr> list;
                        RouteExportChannel::create_from_route (list, route);
+                       if (list.size () == 0) {
+                               continue;
+                       }
+                       state = manager->add_channel_config();
                        state->config->register_channels (list);
                }
 
-               state->config->set_name (route->name());
+               if (state) {
+                       state->config->set_name (route->name());
+               }
 
        }