Error on startup

[user999]

Okay, when i first downloaded the eb .81 mod, it played the vanilla version of the game, after asking on another forum,i changed the folder that it was looking in, still the same, i then changed it again, and when i start up now, i get a message saying generic error in data_descr_battle_map_lighting_and_fog_control.txt ... i cant remember the exact wording, can anyone help me? the mod tag in the properties is correct btw.
ALso, the vanilla small rome total war loading thingy appears right after i clicked, am, i just wasting my time?
Thanks in advance