el capitan

Hi Folks! I recently downloaded Civ 4 through Steam on my 2008 Mac Pro with 2 x 2.8 ghz quad core xeon. I'm currently running osx 10.11.6 and I'd like to find a way to run Map Finder. Can anyone point me in the righ direction? Am I out of luck? Thanks. Edit: I should specify I’m using BTS with...