System.MissingMethodException: Method not found: 'Xamarin.Forms.BindableProperty.Create'.

I have a PCL Project, and I tried to create a custom control. Nothing complex.

The full stack trace

{System.TypeInitializationException: An exception was thrown by the type initializer for App1.PullToRefreshListView ---> System.MissingMethodException: Method not found: 'Xamarin.Forms.BindableProperty.Create'.
  --- End of inner exception stack trace ---
  at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Reflection/MonoMethod.cs:537 }

Anyone know why?

Edit:

Could not resolve type: global::Xamarin.Forms.BindableProperty.Create<global::App1.PullToRefreshListView, global::Xamarin.Forms.Command>