Changing the Startup Program
These are more peculiar errors, so in order to find the problem, I'm going to need to debug. The problem is that for testing purposes, I cannot figure out the specific details. But I'm using C# Express, and so I can't figure out a GUI way to change the startup program. I found the solution at: http://thespoke.net/forums/923473/ShowPost.aspx. Following this, I added these lines of XML:
<StartAction>Program</StartAction>
<StartProgram>C:\Program Files\NUnit-Net-2.0 2.2.8\bin\nunit-gui.exe</StartProgram>
to the PropertyGroup group element and it worked successfully.