issue :: "XamlCTask" task failed unexpectedly.

Tried to compile https://github.com/davidbritch/xamarin-forms/tree/master/DataBinding101

Xamarin.Forms.targets(62,3): error MSB4018: The "XamlCTask" task failed unexpectedly.

There are something with .csproj file, I don't know what.
So I created a fresh Xamarin project and copied 3 necessary files there - now all works.