         _importChooser = new DirChooser(null, _win.importRoot, _win.browseImport);
         _importChooser.changed.add(setImport);
         _exportChooser = new DirChooser(null, _win.exportRoot, _win.browseExport);
-        _exportChooser.changed.add(updatePreviewAndExport);
+        _exportChooser.changed.add(reloadNow);
 
         _importChooser.changed.add(F.callback(updateWindowTitle, true));
         _exportChooser.changed.add(F.callback(updateWindowTitle, true));

            }
            curSelection = newSelection;
        });
        _win.reload.addEventListener(MouseEvent.CLICK, function (..._) :void {
            setImport(_importChooser.dir);
            updatePreviewAndExport();
        });
        _win.export.addEventListener(MouseEvent.CLICK, function (..._) :void {
            for each (var status :DocStatus in _libraries.selectedItems) {
                exportFlashDocument(status);

            _win.title = name;
        };

        function reloadNow () :void {
            setImport(_importChooser.dir);
            updatePreviewAndExport();
        }

        function openConf () :void {
            try {
                _conf = FlumpConf.fromJSON(JSONFormat.readJSON(_confFile));
