Weird error when trying to create Xamrin Forms project in VS2013

Trying to create Xamarin.Forms (Shared) or Xamarin.Forms (Portable) under "Mobile Apps" menu.

Either way I get a message box with:

The vstemplate file references the wizard class 'Xamarin.Forms.RootWizard', which does not exist in the assembly 'Xamarin.Forms.VSTemplate, Version=1.0.0.0, Culture=neutral, PublicKeyToken=e755b816eb188b35'.

I am using VS2013 Update 5.

I have tried reinstalling latest Xamarin.

I have also tried installing Xamarin.Forms 1.4.4.6392 in the hope that might repair any missing VS templates for Xamarin or at least update Xamarin.Forms.VSTemplate.dll which is where I assume the problem lies.

Has anyone else had this issue before?

Many thanks.