Vorpal
Chieftain
First of all let me note that "black terrain" issue seems to be different from the "cheshire cat" issue: there are number of cases when these two things do not happen simultaneously (e.g. I have normal heads, but still no terrain).
The "cat" things seems to be related to problems with textures for leaderheads: either these resources are missing, or there's some problem with loading the textures into the video memory or rendering them.
Now about the "terrain" problem, I think I know the precise cause for it. Because of some reasons, the map starts to "open" not from our starting location, but rather from the center of the map. So the "whole fog of war" and "unexplored area" zones are shifted from their actual location by as much as your initial location is shifted from the center. Try to experiment with it on tiny maps, you'll see exactly what I mean.
Now how can we deal with it? One of the suggested treatments was to fix xml file for technologies, so that they all open the map for you. This does not fix the "fog of war" however as it is still shifted from where it should be. Another partial treatment could be to find a place where the intial location for the player is prescribed and set it to the center of the map. This still does not solve the problem completely though. So let's experiment to figure out what causes this shift!
EDIT:
Actually, after some extra experimentation I figured, that it happens slightly different than what I conjectured: the "unknown" and the "fog of war" layers are simply immobile. That is it is as if you had two cameras, one for terrain and one for the "back/fog" areas. So the camera for terrain moves with your focus, whereas the other one always hangs obeve the center of the map...
The "cat" things seems to be related to problems with textures for leaderheads: either these resources are missing, or there's some problem with loading the textures into the video memory or rendering them.
Now about the "terrain" problem, I think I know the precise cause for it. Because of some reasons, the map starts to "open" not from our starting location, but rather from the center of the map. So the "whole fog of war" and "unexplored area" zones are shifted from their actual location by as much as your initial location is shifted from the center. Try to experiment with it on tiny maps, you'll see exactly what I mean.
Now how can we deal with it? One of the suggested treatments was to fix xml file for technologies, so that they all open the map for you. This does not fix the "fog of war" however as it is still shifted from where it should be. Another partial treatment could be to find a place where the intial location for the player is prescribed and set it to the center of the map. This still does not solve the problem completely though. So let's experiment to figure out what causes this shift!
EDIT:
Actually, after some extra experimentation I figured, that it happens slightly different than what I conjectured: the "unknown" and the "fog of war" layers are simply immobile. That is it is as if you had two cameras, one for terrain and one for the "back/fog" areas. So the camera for terrain moves with your focus, whereas the other one always hangs obeve the center of the map...