         var viewPt :Point = _isoView.globalToLocal(new Point(event.stageX, event.stageY));
         _isoView.centerOnPt(new Pt(viewPt.x - _isoView.width / 2 + _isoView.currentX,
             viewPt.y - _isoView.height / 2 + _isoView.currentY), false);
+        refreshBaseBlockScenes();
     }
 
     public function setSceneModel (model :MisoSceneModel) :void

import com.threerings.crowd.data.PlaceObject;
import com.threerings.util.DelayUtil;
import com.threerings.util.Log;
import com.threerings.media.tile.Colorizer;
import com.threerings.media.tile.NoSuchTileSetError;
import com.threerings.media.tile.TileSet;

                    }
                }
                baseScene.render();
                _isoView.addSceneAt(baseScene, 0);
                _baseScenes.put(blockKey, baseScene);
            }
        });
    }

    protected function refreshScene () :void
    {
        // Clear it out...
        _isoView.removeAllScenes();

        var scene :IsoScene = new IsoScene();
        scene.layoutRenderer = new ClassFactory(PrioritizedSceneLayoutRenderer);
        var time :int = getTimer();

        refreshBaseBlockScenes();

        var set :ObjectSet = new ObjectSet();
        _model.getObjects(new Rectangle(-100, -100, 200, 200), set);
        time = getTimer();
        for (var ii :int = 0; ii < set.size(); ii++) {
            var objInfo :ObjectInfo = set.get(ii);
            var objTileId :int = objInfo.tileId;
            var objTileSet :TileSet;
