Error 'Undefined property' when loading model to controller

[eluser]Tortoise[/eluser]
[quote author="Seppo" date="1212944779"]Probably you are running Windows and your server Unix...[/quote]
Not right. I'm running Mac OS X (Unix) and the server is Unix too.
[quote author="Seppo" date="1212944779"]How are your model file and class named (edit: I mean the lowercases/uppercases)?[/quote]
The model file name is - news_model.php and the model class definition is - class News_model extends Model.
The view file name is - newsview.php and the view class definition is - class News extends Controller.