I have version 1.0 and 1.1 of Visual Studio Net loaded on my development machine. I was in version 1.1 and pressed F5 to run an application that I am testing. Then I went to version 1.0 and did the same thing to compare a specific behavior of a similar application. The following error was thrown at that time:

Error while trying to run project: Unable to start debugging on web server. A debugger is already attached. Would you like to disable future attempts to debug ASP.NET pages for this project?

That word "future" bothered me - like in forever or never again?

Ouch! Live and learn. Yes, versions 1.0 and 1.1 can reside on the same machine but do not do what I did – it does not work. Or it does work but perhaps not the way you would like.

Now who would ever want to do something like this? I guess I am the only one. Not a big deal but a pain it is! :)

Tom