If the program says you have old version of Zurich and O'Hare, it's not a program error: it means you really have old versions of these two so, reinstalling would not help.
You need to download their installer and install, there's no need to uninstall, but it will will not hurt if you do. If you already had Zurich 1.3, there's a smaller update file that will bring it to the current version, which is 1.3.1. Similarly, if you already had O'Hare 1.1, there's a smaller file that will update it to the current version, which is 1.1.1.
If your versions are older, you need to download and install the full installer, then install JFK.