In my years of using Visual Studio and attaching and detaching from processes, I can’t recollect seeing this error, which is why it stood out to me just now when I detached from an IIS .NET 4.0 website project.
I’m purely curious about this error message and looking for an explanation of what it means, and what the referenced “func-evals” are.

Info:
~ http://blogs.msdn.com/b/ansonh/archive/2006/09/22/765986.aspx
The method can be invoked in different places in the VS IDE not exclusive to:
Although I haven’t found more info about the error message, it seems that I may have invoked a method in the code while in break mode and tried to detach from the process before that was completed, causing Visual Studio to prompt me to wait.