added exception handling

source/ArmarXGui/gui-plugins/StatechartEditorPlugin/view/dialogs/EditDefaultValueDialog.cpp

@@ -162,5 +162,11 @@ void EditDefaultValueDialog::onImportInternalJson()
             msgBox.setText(QString("Error: ") + QString::fromStdString(ex.what()));
             msgBox.exec();
         }
+        catch(LocalException& ex)
+        {
+            QMessageBox msgBox;
+            msgBox.setText(QString("Error: ") + QString::fromStdString(ex.what()));
+            msgBox.exec();
+        }
     }
 }