First off, as a general comment, I'd like to quote fellow-modder Grave:
So the first thing to do is to check if the mod is installed properly. That being said, there are several complaints about instant CTDs with both patches 4k and 4l. It cannot really be Vista-related, as my MP tester doesn't use Vista and he can play patch 4k, but not 4l. (I do use Vista and have no problems with either patch.)
I've mentioned this on the MOO2Civ Bugs/Errors thread: I suggest using a previous patch if that works OK, as I'm currently unable to fix any bugs or errors (my BtS is still not working). So, if patches 4k and 4l don't work, try patch 4i here: http://forums.civfanatics.com/downloads.php?do=file&id=12437.
Once I get BtS up and running again, I'll focus on getting a (hopefully bugfree) patch up again.
Almost ALL interface issues are caused by improper installation in some way or another.
So the first thing to do is to check if the mod is installed properly. That being said, there are several complaints about instant CTDs with both patches 4k and 4l. It cannot really be Vista-related, as my MP tester doesn't use Vista and he can play patch 4k, but not 4l. (I do use Vista and have no problems with either patch.)
I've mentioned this on the MOO2Civ Bugs/Errors thread: I suggest using a previous patch if that works OK, as I'm currently unable to fix any bugs or errors (my BtS is still not working). So, if patches 4k and 4l don't work, try patch 4i here: http://forums.civfanatics.com/downloads.php?do=file&id=12437.
Once I get BtS up and running again, I'll focus on getting a (hopefully bugfree) patch up again.