screenshot of your map in editor? no idea's, but a little info wouldnt hurt to find out whats going on. I know, if you lower the terrain elevation too low, in the center of the map an error box will appear. I think if you go too low, and artillery hits the map, damaging the terrain below the min value, it might open a hole to nothing ness. Maybe your map elevation is too low? speculating...
This is my map:
@OnkelSam: I tried that but it didn't work.
Relic Entertainment
cblanco ★ 
보드카 중대 
VonManteuffel 
Heartless Jäger 
