descr_building_battle.txt error?

Hi I am new to forums all together, so go easy on me.

I am sort of working on a small mod for bi, and I have come across a problem. When I loaded the game, (with -show_err enabled) I came across the error "Script error in bi/data/descr_building_battle.txt, at line 50, collumn 21. Building db, expected faction, culture or season" Does anyone have a clue what this means. I never edited that file, but the error still shows. Is it possible that I edited another file that causes an error in descr_building_battle.txt???

It says:

##barb_log_wall.tga
{
roman ##roman_log_wall.tga
"hun ##roman_log_wall.tga"
eastern ##eastern_log_wall.tga
nomad ##eastern_log_wall.tga
}

The line in quotes is line 50. I don't see what is wrong. By line 50, do they mean the fiftieth line or the fiftieth line discluding the commented lines?