New Patch 220.127.116.11
There's a new patch, 18.104.22.168, complete with a "what's new" file, and a new manual.
To get the game to run, you have to first install 22.214.171.124, from 11-15-17; then, the latest patch, 126.96.36.199, from 11-21-19. Some had installed an “unofficial-beta” patch, 188.8.131.52. I had tried to install 184.108.40.206 over that, and it just didn’t work. You have to do the 220.127.116.11 first, then 18.104.22.168. Both are available on Matrix.
A way to tell if you have the latest, is that a new scenario has been added: Chickamauga 1863. If you don’t have it, you’re not patched up.
Another way, is that when you run the game, on the first screen (“installer” screen) there’s a button, “check for update”. Click that, and it’ll tell you if you’re current.
It’s a bit of a challenge keeping this game running, but it’s worth it! There are some new options I don’t understand, but with the "what's new" and the new manual, we can read up.
Remember also that the game saves moves in a hidden place, not your normal Matrix game directory. It’s in your documents folder, under “my games”, “TOAW IV”, “saves”. The game directory is under “programs X86”, Matrix, etc. Good gaming!