This is another \"I\'m confused question\". So I\'m working on bringing in custom views into a view controller. I\'ll just outline the exact steps for the error.
Define an IBOutlet @property in your parent class's @interface section like this:
@property (weak, nonatomic) IBOutlet ArcView *arcView
Then go into Interface Builder, and right click on File's Owner. When you see "arcView" in the black HUD window, drag the mouse from that item to your view on the XIB.
Now you have a property for your arcview control, and you can utilize it just like you would any control such as UIButton, UILabel etc.