Well actually it does compile/build, you are having the same problem I had a couple of days ago (https://forums.xamarin.com/discussion/54275/xamarin-forms-1-5-1-troubles-on-new-project). The trick was/is to manually replace some zip’s.
But as I said in my second post: this test project showed there was no (ServiceStack related) problem. I just uploaded the project to GitHub a) to test working with GitHub from VS2015, b) because I got the impression from your second post you wanted to have a look.
