**[UPDATED] **This is solved. See this.
I ran into this problem:
I appeared when I added an Edit-view for an inline view-data class. That is; I have created a special class to hold the view data that the controller is acting upon, and that class is declared inside the controller.
When the Add view-dialog (which I love by the way) of the ASP.NET MVC closes with OK – this dialog appears.
I think that it’s a bug in the RC-release but I am not sure. I’ll send this to the ASP.NET MVC team and see what they have to say.
I am not sure that I will have the view data class as part of the other class since that violates the Single Responsibility Principle (SRP) – but if I do I get this crash.
The more reason for me to move it then! I’ll do that…