You may have noticed after installing Visual Studio 2008 that if all of your projects in a solution don't compile, you can't debug the one that DOES compile. This causes problems for me when I work with WCF because I may want to update the service code, and later update the client proxy....in the meantime, changes I made such as deleting the existing proxy do not compile anymore...so I can't run the solution.

There are two settings that affect this:

a) All projects are compiled each time you try to run

b) If errors are encountered the environment is set not to run at all

You can address this in one of two ways. You can only compile those projects that you need to, by checking the "Only build startup projects and dependencies on Run" setting as shown here:

Or, you can set the environment so that it runs the old version of any projects that don't compile as shown here:

The latter causes more problems in my opinion, because you may not realize you are running an older version of one or more projects. The former is what I choose to set my environment to, since it allows me to compile only dependencies of the project I'm trying to test at the moment. Thus, I can recreate my service references from scratch, without having to comment out client code that doesn't compile in the interim.

There...annoyance gone.