Asks if I want to enable ebugging for a project that has debugging enabled?

[Fred Flintstone]

I have a W2003 Server running IIS6 and VS.Net 2005. I have a project
I'm trying to get debugging to work on. So I load this project on the
server. I go to start debugging and it says "Debugging is not enabled
in web.config. Turn it on?"

I cancel this and look at web.config. Debug = "True". I look at the
IIS setup of this web site. Under the ASP.Net tab, debugging is
enabled.

Why is visual studio asking me if I want to enable something that's
plainly enabled?

Thanks!