Missing compiler required member 'Microsoft.CSharp.RuntimeBinder.Binder.InvokeMember'
So I was messing about with Razor templates in Umbraco 4.7. Couldn't save any scripts though. Keep getting the error "Missing compiler required member 'Microsoft.CSharp.RuntimeBinder.Binder.InvokeMember'"
Fixed it by installing ASP.NET MVC 3 Tools Update.
To install ASP.NET MVC 3 RTM using the Web Platform Installer (Web PI), visit the following page:
http://www.microsoft.com/web/gallery/install.aspx?appid=MVC3
Alternatively, you can download the installer for ASP.NET MVC 3 RTM for Visual Studio 2010 from the following page: