Having a bit of difficulty tracking down all the mods, so I still haven't been able to open the save
, but I suspect this may be a mod conflict issue (that often is the case when the game does something wacky, like you describe). A couple of observations, though, as I pause mid-mod-hunt:
First, the download page for the Falcon AI: Diplomacy mod says "Works with Brave New World version 1.0.3.18", while the current game version is 1.0.3.144.
Second, WHoward has posted instructions on how to run both his DLL - Various Mod Components mod and Putmalk's Civ IV Diplomacy Features mod (which contains its own DLL; you can only run one DLL at a time without triggering mod conflicts):
http://forums.civfanatics.com/showthread.php?t=518556 Since you include WHoward's enabling mod (Diplomacy - Civ IV Features), I assume you followed these instructions, but if not you should try that.
Anyway, I'm still poking around to download the remaining mods. Specifically, I can't find "Unit range increases" and "Civ balancing tweaks". Can you point me to them?