Map editing and CTD in game

[Meneldil]

Well, oddly, the game does not always ctd when I'm scrolling over a settlements.

Right now, there are 5 provinces in the map : Nile Delte, Marmora, Cyrenaica, Thebais and Latium

Latium is owned by the Senate
Nile Delta, Cyrenaica and Marmora are owned by the German
Thebais is owned by Egypt.

As loong as the screen stays in Thebais, that's alright.
If I scroll to the west (Marmora), CTD, so it does if I scroll to the north (Nile Delta.)

It would make me think that it's a faction related problem, but I once went over arabia (scrolling to the east then to the north) and another CTD, although there's no settlements in that area (though Arabia is still a part of the Thebais province).
I'm still investigating.