I am having this problem.I have used the Debugger before and actually was using it with
this current application until something change and I don't know what. Now when I try
to debug it gives this error:
"A project with an Output Type of Class Library cannot be started directly. In order
to debug this project, go to the Debugging tab under Configuration Settings in Project
Properties, and set the Start Action to Start External Program or Start URL.
Alternatively, you can add a non-library project to this solution that uses a
reference to this project and set it as the startup project. "
Its a ASP.NET Application running a ASP project.
I have tried all of these suggestion and nothing has worked for me. Could somebody
please tell what could be causing this and maybe more specifics on how to remedy it. Thanks a lot

Go in to IIS and make sure that it is set as an application.

J

This error usually occurs when your solution start project is set to a class library assembly other than a web project assembly. It sounds like you have somehow changed the start project of your solution. Right-click on the web application project and choose "Set as start project".