T4MVC: VS2015 Update 1 causes an error - Identifier Expected

I’m still investigating this but thought I’d post it here in case anyone else experiences the same thing. Just upgraded to 3.16.5 and we’re getting the following code appear in the autogenerated T4MVC.cs file:

public override void ExecuteResult(System.Web.Mvc.ControllerContext ) { }

It appears in the T4MVC_System_Web_Mvc_ActionResult class. There’s a similar missing parameter name in the T4MVC_System_Web_Mvc_FileResult class too.

Not been able to find any changes that cause this yet though