I've created a Xamarin.Forms project that uses PCLStorage. I've added PCLStorage from Nuget to all projects in the solution (iOS, Android, Win Phone and shared). When I run the app in the iOS simulator or on my iPhone 5s device I get "System.NotImplementedException: This functionality is not implemented in the portable version of this assembly.".
I've tried changing"Linke behaviour" to "Don't link" in the project settings and tried adding a "LinkerPleaseInclude" class to my iOS project for PCLStorage (as described here: http://forums.xamarin.com/discussion/18356/build-fails-for-iphone-but-is-fine-with-android-and-iphonesimulator) without success.
If I run the app/solution with Xamarin Studio on my Mac everything works.