Exception thrown while attempting to perform a menu item's action

[imoiseev]

I did everything according to the instructions. I linked the preferences menu item to the IBAction function, but when I call it I get this error. Can you help me tell me what's wrong?

Exception thrown while attempting to perform a menu item's action. It has been caught in order to not leave the menu in an inconsistent state. This is a bug in the client code. -[NSNib _initWithNibNamed:bundle:options:] could not load the nib 'GeneralSettingsViewController' in bundle NSBundle