Can't extend CI_Controller

[eluser]Lukas1[/eluser]
Yes, I know that the whole time. I knew that before posting my problem here. I had the file in correct folder the whole time and this was not the issue. And I have written several times, that MY_Controller.php IS located in application/core. You even didn't understand my last post correctly. Ah, come on, is it really me, who is completely incomprehensible? Anyway, I am fine now, my problem is solved, thank you for your concern