That world was a medium region using default Dwarf Fortress parameters.
I spent some time last night generating another world with a large region with default DF parameters and the results were very different!
https://puu.sh/FLyfX/4dae96d70e.pngI'll look for the recommended advanced parameters and load up another world to see what happens.
Disregard below, just working through the issues.
EDIT:
I'm playing with the mod shoved into the "mod" section of a LNP launcher, so it may not be using everything appropriately.
Found the worldgen parameters files. Dropped it into the main DF directory and overwrote the default worldgen file and the parameters show up in game. I'll try it out now.
Crashed on the first attempt, large region Dark Ages preset. around year 110
crashed in worldgen on 2nd attempt using DA preset for medium
sigh. just getting crashes in worldgen using the DA presets
I'm scrapping the way I was running the mod and just overwrit the default DF files. This should have better results. I'm going too far to preserve my keybindings, I know.
I screwed it all up. Game won't launch DFhack. I am noob.
Fiddled with it again. Seems to be working now.
Edit2:
https://puu.sh/FLE8p/881927dc7c.pngThis is the world generated with your parameters. Looks better.
Still hasn't kept Dark Gnome civs from being wiped out no matter the size of the world or worldgen params.