title: Invalid context 0x0 with FBSDKProfilePictureView
body: <p>I have a bunch of strange warnings in the console while using Facebook SDK 4.1 FBSDKProfilePictureView:</p>
  
  <blockquote>
    <p>Error: CGContextDrawPath: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.</p>
  </blockquote>
  
  <p>Here is my code:</p>
  
  <pre><code>import FBSDKCoreKit
  
  func getFBProfilePicture(facebookID: String) -&gt; UIView {
      let picView = FBSDKProfilePictureView()
      picView.profileID = facebookID
      picView.pictureMode = FBSDKProfilePictureMode.Square
      return picView as UIView
  }
  </code></pre>