diff --git a/Config/Schema/empty b/Config/Schema/empty
deleted file mode 100644
index e69de29b..00000000
diff --git a/Console/Command/NetCommonsAppShell.php b/Console/Command/NetCommonsAppShell.php
new file mode 100644
index 00000000..06150564
--- /dev/null
+++ b/Console/Command/NetCommonsAppShell.php
@@ -0,0 +1,30 @@
+<?php
+/**
+ * AppShell file
+ *
+ * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
+ * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ *
+ * Licensed under The MIT License
+ * For full copyright and license information, please see the LICENSE.txt
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ * @link          http://cakephp.org CakePHP(tm) Project
+ * @since         CakePHP(tm) v 2.0
+ * @license       http://www.opensource.org/licenses/mit-license.php MIT License
+ */
+
+App::uses('Shell', 'Console');
+
+/**
+ * Application Shell
+ *
+ * Add your application-wide methods in the class below, your shells
+ * will inherit them.
+ *
+ * @package       app.Console.Command
+ */
+class NetCommonsAppShell extends Shell {
+
+}
diff --git a/Console/Command/Task/empty b/Console/Command/Task/empty
deleted file mode 100644
index e69de29b..00000000
diff --git a/Error/YAExceptionRenderer.php b/Error/YAExceptionRenderer.php
deleted file mode 100644
index 3cad3f5f..00000000
--- a/Error/YAExceptionRenderer.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-/**
- * Exception Renderer
- *
- * Provides Exception rendering features. Which allow exceptions to be rendered
- * as HTML pages.
- *
- * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
- * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
- *
- * Licensed under The MIT License
- * For full copyright and license information, please see the LICENSE.txt
- * Redistributions of files must retain the above copyright notice.
- *
- * @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
- * @link http://cakephp.org CakePHP(tm) Project
- * @since CakePHP(tm) v 2.0
- * @license http://www.opensource.org/licenses/mit-license.php MIT License
- */
-
-App::uses('NetCommonsExceptionRenderer', 'NetCommons.Error');
-
-/**
- * Exception Renderer.
- *
- * Captures and handles all unhandled exceptions. Displays helpful framework errors when debug > 1.
- * When debug < 1 a CakeException will render 404 or 500 errors. If an uncaught exception is thrown
- * and it is a type that ExceptionHandler does not know about it will be treated as a 500 error.
- *
- * ### Implementing application specific exception rendering
- *
- * You can implement application specific exception handling in one of a few ways:
- *
- * - Create a AppController::appError();
- * - Create a subclass of YAExceptionRenderer and configure it to be the `Exception.renderer`
- *
- * #### Using AppController::appError();
- *
- * This controller method is called instead of the default exception handling. It receives the
- * thrown exception as its only argument. You should implement your error handling in that method.
- *
- * #### Using a subclass of YAExceptionRenderer
- *
- * Using a subclass of YAExceptionRenderer gives you full control over how Exceptions are rendered, you
- * can configure your class in your core.php, with `Configure::write('Exception.renderer', 'MyClass');`
- * You should place any custom exception renderers in `app/Lib/Error`.
- *
- * @package  NetCommons\NetCommons\Error
- */
-class YAExceptionRenderer extends NetCommonsExceptionRenderer {
-
-}
diff --git a/Lib/empty b/Lib/empty
deleted file mode 100644
index e69de29b..00000000
diff --git a/Model/Datasource/empty b/Model/Datasource/empty
deleted file mode 100644
index e69de29b..00000000
diff --git a/Test/Case/Model/Behavior/empty b/Test/Case/Model/Behavior/empty
deleted file mode 100644
index e69de29b..00000000
diff --git a/Test/Fixture/empty b/Test/Fixture/empty
deleted file mode 100644
index e69de29b..00000000
diff --git a/Vendor/empty b/Vendor/empty
deleted file mode 100644
index e69de29b..00000000
diff --git a/View/Helper/NetCommonsAppHelper.php b/View/Helper/NetCommonsAppHelper.php
new file mode 100644
index 00000000..de85d9a9
--- /dev/null
+++ b/View/Helper/NetCommonsAppHelper.php
@@ -0,0 +1,31 @@
+<?php
+/**
+ * Application level View Helper
+ *
+ * This file is application-wide helper file. You can put all
+ * application-wide helper-related methods here.
+ *
+ * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
+ * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ *
+ * Licensed under The MIT License
+ * For full copyright and license information, please see the LICENSE.txt
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ * @link          http://cakephp.org CakePHP(tm) Project
+ * @since         CakePHP(tm) v 0.2.9
+ * @license       http://www.opensource.org/licenses/mit-license.php MIT License
+ * @author Shohei Nakajima <nakajimashouhei@gmail.com>
+ */
+
+App::uses('Helper', 'View');
+
+/**
+ * Application helper
+ *
+ * Add your application-wide methods in the class below, your helpers
+ * will inherit them.
+ */
+class NetCommonsAppHelper extends Helper {
+}