return -1;
boost::shared_ptr<MidiSource> src = region->midi_source(0);
- src->load_model();
+ {
+ Source::Lock lock(src->mutex());
+ src->load_model(lock);
+ }
boost::shared_ptr<MidiModel> old_model = src->model();
Glib::Threads::Mutex::Lock sl (new_src->mutex ());
- new_src->load_model(false, true);
+ new_src->load_model(sl, true);
boost::shared_ptr<MidiModel> new_model = new_src->model();
new_model->start_write();