Some people brought to my attention that fact that the 1.0.1 and 1.0.2 versions did not run on Windows XP. I've corrected that in version 1.0.3 by creating a new installer that doesn't have the problems of the Microsoft installer. All versions of SnpMap require Microsoft .Net v. 3.5, and but this version's installer won't automatically install .Net like the previous versions. I also changed the positive symbols because the symbols I was using aren't supported on Windows XP. The download link is the same as before. This downloads the setup exe, not a zip file. It's also a couple megabytes smaller. In the future I'll have two setup programs. A small one with just the updated exe file, and the full setup that includes the data files.
Before installing version 1.0.3, I recommend uninstalling the previous version of SnpMap. Version 1.0.3 puts the files in a different location.