I am sorry that you are having trouble building fuzzylite in Windows using Visual Studio. In my virtual box of Windows XP, fuzzylite builds just fine. I do not have a computer with a greater version of Windows, so at the moment it is not possible for me to build in such an environment.
Could you please create a new directory, extract again the sources from the downloaded file (without any modifications), and just run the build script included (i.e. build.bat)? This will build fuzzylite from console instead of Visual Studio. You can later configure your own VS project to include and link fuzzylite libraries.