#0  0x00007faf6f22094b in g_sequence_iter_get_sequence () from /tmp/apport_sandbox_v0EX7z/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007faf70520fc1 in iter_is_valid (iter=0x55992003f2e0 <iter>, list_store=0x559921645640) at ././gtk/gtkliststore.c:396
  [Error: gtkliststore.c was not found in source tree]
#2  0x000055991fe241b9 in append_metadata_array (messageIter=messageIter@entry=0x7ffcf4d01a00) at mpris-interface.c:59
  54: 
  55:     dbus_message_iter_open_container(&dict, DBUS_TYPE_DICT_ENTRY, NULL, &dict_entry);
  56:     property = g_strdup("mpris:trackid");
  57:     dbus_message_iter_append_basic(&dict_entry, DBUS_TYPE_STRING, &property);
  58:     if (gmtk_media_player_get_uri(GMTK_MEDIA_PLAYER(media)) == NULL
  59:         || !gtk_list_store_iter_is_valid(playliststore, &iter)) {
  60:         s_val = g_strdup("/org/mpris/MediaPlayer2/TrackList/NoTrack");
  61:     } else {
  62:         gtk_tree_model_get(GTK_TREE_MODEL(playliststore), &iter, ADD_ORDER_COLUMN, &i, -1);
  63:         s_val = g_strdup_printf("/org/mpris/MediaPlayer2/Track/%i", i);
  64:     }
#3  0x000055991fe27131 in mpris_send_signal_Updated_Metadata () at mpris-interface.c:1222
  1217:         dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &interface);
  1218:         dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "{sv}", &dict);
  1219:         dbus_message_iter_open_container(&dict, DBUS_TYPE_DICT_ENTRY, NULL, &dict_entry);
  1220:         property = g_strdup("Metadata");
  1221:         dbus_message_iter_append_basic(&dict_entry, DBUS_TYPE_STRING, &property);
  1222:         append_metadata_array(&dict_entry);
  1223:         dbus_message_iter_close_container(&dict, &dict_entry);
  1224: 
  1225:         dbus_message_iter_open_container(&dict, DBUS_TYPE_DICT_ENTRY, NULL, &dict_entry);
  1226:         property = g_strdup("CanSeek");
  1227:         dbus_message_iter_append_basic(&dict_entry, DBUS_TYPE_STRING, &property);
#4  0x00007faf6f4dec25 in g_closure_invoke () from /tmp/apport_sandbox_v0EX7z/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007faf6f4f0c32 in ?? () from /tmp/apport_sandbox_v0EX7z/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6  0x00007faf6f4f988c in g_signal_emit_valist () from /tmp/apport_sandbox_v0EX7z/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007faf6f4fa11b in g_signal_emit_by_name () from /tmp/apport_sandbox_v0EX7z/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007faf6eda546e in gmtk_media_player_set_state () from /tmp/apport_sandbox_v0EX7z/usr/lib/x86_64-linux-gnu/libgmtk.so.1
#9  0x000055991fe1f9bc in play_iter (playiter=<optimized out>, restart_second=<optimized out>) at main.c:646
  641:                                                        metadata->position);
  642:             }
  643:         }
  644:         free_metadata(metadata);
  645: #endif
  646:         gmtk_media_player_set_state(GMTK_MEDIA_PLAYER(media), MEDIA_STATE_PLAY);
  647: 
  648:     }
  649: 
  650:     return 0;
  651: }
#10 0x000055991fdf6268 in main (argc=<optimized out>, argv=<optimized out>) at main.c:1353
  1348:     if (embed_window == 0) {
  1349:         mpris_hookup(control_id);
  1350:     }
  1351:     show_window(embed_window);
  1352:     if (playiter)
  1353:         play_iter(&iter, 0);
  1354:     if (argv[fileindex] == NULL && embed_window == 0) {
  1355:         // When running as apple.com external player, don't load the default playlist
  1356:         if (control_id == 0) {
  1357:             use_remember_loc = remember_loc;
  1358:             gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(menuitem_view_playlist), playlist_visible);