title: Trouble with upload component - Cakephp 2.0
body: <p>I was trying to incorporate file upload to my project  but whenever I access the a function in the controller  it gives me these warnings:</p>
  
  <p>Warning (2): call_user_func_array(): First argument is expected to be a valid callback, 'UploadComponent::initialize' was given [CORE/Cake/Utility/ObjectCollection.php, line 110]</p>
  
  <p>Warning (2): call_user_func_array() [http://php.net/function.call-user-func-array]: First argument is expected to be a valid callback, 'UploadComponent::beforeRender' was given [CORE/Cake/Utility/ObjectCollection.php, line 110]</p>
  
  <p>Warning (2): call_user_func_array() [http://php.net/function.call-user-func-array]: First argument is expected to be a valid callback, 'UploadComponent::shutdown' was given [CORE/Cake/Utility/ObjectCollection.php, line 110]</p>
  
  <p>The upload component that I added works fine for my cake 1.3 version.</p>
  
  <p>please help</p>