Yesterday I ran into an issue when I was debugging a web application that I was building. It was debugging but as soon as I installed the “Not So” RAD Controls on my machine and restarted Visual Studio, I was lucky enough to receive this error every time I wanted to debug and step through my application:
Debugging Failed Because [...]

Well this didn’t take long. I ran into a problem today with trying to get an old 1.1 project to open on my Vista machine and nothing was working. I did some digging and found this article:
How to Enable ASP.NET 1.1 on IIS7
You do need to do a restart after installing the 2 .NET 1.1 updates but it’s worth it.