About the Battles.ENG size issue. Looks like the buffer where the map list is copied to has a fixed size but the application doesn't check it and the additional map data is written into other Dark Omen data structures and corrupting them o.O
No idea why but I can't get the pre-battle scene (where you select army and map) to open. It automatically closes and returns me to the first multiplayer-scene (Play/Edit Army). So I will try to fix this blind.
In theory I know what must be modified . Will increase the limit to 200 entries.