Refactor->Rename broken in Visual Studio

I'm using Visual Studio SP1 (Ver 10.0.40219.1) and I created an ASP.NET MVC 3 app. 开发者_如何学C I'm trying to rename an abstract class that inherits from Controller.

I right-clicked the class name and selected Refactor->Rename. I changed the name and clicked OK (with Preview reference changes checked). On the Preview Changes dialog I clicked Apply, and got the following error:

Microsoft Visual Studio

StartIndex cannot be less than zero.

Parameter name: startIndex

An ideas what the problem might be?