.net - Why is my configuration manager disabled in Visual Studio 2010?

Question

I just started working on a new project and I can't set the build action to Debug/Release. This is a huge problem!

I have another solution on my system that, when opened, allows me to change the solution configuration. So it must have something to do with this specific solution?

Answer 1

(from http://www.gregcons.com/KateBlog/HowDoIMakeADebugBuild.aspx, which includes screenshots)

bring up Tools, Options, and go to the General section under Projects and Solutions. Find "Show advanced build configurations" and check it.