Unity 5.2 Win10 UWP - can't find Windows assembly

Copying unprocessed assemblies…

Running AssemblyConverter…
System.IO.FileNotFoundException: Assembly “Windows, Version=255.255.255.255, Culture=neutral, PublicKeyToken=null” file not found.
at Unity.UWPAssemblyResolver.Resolve(AssemblyNameReference name, ReaderParameters parameters)

Unity 5.2.0f3 Personal
VS 2015 Community 14.0.23107.0 D14REL
VSTU 2.1.0.0
VS Tools for UW Apps 14.0.23309.00 d14oob (update 1) - same result without update1

Tried on two different Win10Pro builds

Was discussed here - Build error with Unity 5.2 - Unity Engine - Unity Discussions

Thanks, copying the windows.winmd file into the [projectname] folder of the VS solution let me create a UWP build. Lots of Unity and Windows.Foundation warnings but it builds and runs.