A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/Songs.php

Line Number: 143

Backtrace:

File: /usr/local/apache2/htdocs/music/trunk/application/controllers/Songs.php
Line: 143
Function: _error_handler

File: /usr/local/apache2/htdocs/music/trunk/index.php
Line: 311
Function: require_once