error when extending CI_Controller

[eluser]Kenneth Vogt[/eluser]
As noted above, it is saved in ./application/core/MY_Controller.php. Am I misunderstanding you?

Also, while it is correct to say that 500 errors are server errors, it is not correct to say it has nothing to do with CodeIgniter. A coding mistake can easily result in a 500 error. For instance, attempt to autoload a library where the library class is missing its closing bracket: you get a 500 error.