same here. The INSTALL.txt says:
Paste the file FFAA MCOE MOD to "MODS" (example:C:/Programs Files/Emergency 4-Deluxe Edition/Mods)
Execute Emergency 4 and select "Extras" on the main menu and load FFAA MCOE MOD. After, select "Emergencias" and select City/Ciudad 1 and enjoy the mod!
But I have no clue where to select the city. If I just start the freeplay I can drive around with units, but no missions appear.
Am I forgetting something?