In jimson's original post, he referred to my airfield tutorial thread from back in 2011(?).
The tutorial depended upon exporting a working version of cityg1
Here's the old export:
OBJECT world
kids 1
OBJECT group
name "model"
data 14
MaxDist=110000
kids 1
OBJECT group
name "ground"
data 14
MaxDist=110000
kids 1
OBJECT object
name "grnd"
data 36
MaxDist=528000
PolyID=20005
ZBias=16
loc 0.000000 0.000000 0.000000
texture "CITY.bmp"
crease 45.000000
numvert 4
-2640.000000 0.000000 2640.000000
2640.000000 0.000000 2640.000000
2640.000000 0.000000 -2640.000000
-2640.000000 0.000000 -2640.000000
numsurf 1
SURF 0x10
refs 4
0 0.000000 0.000000
1 1.000000 0.000000
2 1.000000 1.000000
3 0.000000 1.000000
kids 0
Note the MaxDist parameter for each object
Here's the new export:
OBJECT world
kids 1
OBJECT group
name "model"
data 111
GroupFlags=268435465
MaxDisplayDist=110000.000000
MaxFadeRange=150.000000
LodOrigen=0.000000,0.000000,-0.000000
kids 1
OBJECT group
name "ground"
data 58
GroupFlags=268435465
LodOrigen=0.000000,0.000000,-0.000000
kids 1
OBJECT group
name "grnd"
data 20
GroupFlags=268435457
kids 1
OBJECT object
name "tex0"
data 41
FaceFlags=536872966
FaceId=20005
ZBias=16
loc 0.000000 0.000000 0.000000
texture "CITY.bmp"
crease 45.000000
numvert 4
-2640.000000 0.000000 2640.000000
2640.000000 0.000000 2640.000000
2640.000000 0.000000 -2640.000000
-2640.000000 0.000000 -2640.000000
numsurf 1
SURF 0x10
refs 4
0 0.000000 0.000000
1 1.000000 0.000000
2 1.000000 1.000000
3 0.000000 1.000000
kids 0
Note the missing MaxDisplayDist parameters