I am actually doing a little coding today, woot! Except, I haven't gotten NANTRunner to run on my Vista 64-bit workstation yet. I need to use this in order to correctly build the solution.
Running any build target from NANTRunner (even an empty one) was yielding this result:
By using an empty target in the build file, I ruled out problems with the build script, or accessing files that were part of the build. So this means that VS or NANTRunner is missing something.
I searched the registry and it doesn't look like the path to this file or folder is defined in there, meaning something is hard-coded to this path. I went to find this file, and found the problem: VS.NET 2003 is not installed under "C:\Program Files". It's installed under "C:\Program Files (x86)".