Why are changes not allowed in Visual Studio 2010?

I'm in the process of upgrading from VS 2008 to VS 2010, and for the most part it is going pretty smooth. One problem I'm running into is that if I put a break in the code, and try to make changes, I get an error saying that it's not allowed. This is something that I can't live w开发者_如何学编程ithout, so I'm hoping it can be fixed. Otherwise I'll be sticking with VS 2008 for a while longer.

I have no add-ins, and the only extension I have is the GIT Source Control Manager.

I tried uninstalling the GIT Source Control Manager, but that didn't help the problem.

You're probably running a Release build.

Switch to the Debug configuration.

For ASP.NET applications, go to Project > App properties > Web > Debugging, and make sure that "enable and continue" is checked.

Do you have Edit and Continue in the Options > Debugging > Edit and Continue menu enabled?

This problem is due to Intellitrace setting

If Intellitrace is enabled make sure Intellitrace event only is checked

Otherwise this will not allow edit and continue..

If you will click on Intellitrace options you will see the warnings.