I've been working a lot on those files, but something is really not working.

Any kind of modification I try to do to overlays just crashes the game.

I am pretty sure its just the overlay .cas file, because game loads with ALL other modifications both on or off.

But if I try to change everything in the overlay cas model of the city, it just crashes or freeze during loading of tactical view.

I made infinite different tries, including:

- brand new and complicated overlay and underlay
- plain underlay and overlay with my custom models inside it renamed with original names of the game overlay
- plain underlay (outline and underlay as simple planar planes, no textures, no modelling at all) and overlay (the identical plane of the outline, no textures)
- original underlay of the game and custom made overlay (just the outline model of the original underlay with no textures)
- original underlay and original overlay of the game, with JUST a change in ONE texture for one of the models in the overlay

..and tons of other tentatives

I even tried to use my plain underlay with the original overlay of the game (even if they are mainly different, they even cover DIFFERENT ground areas ) and that damn game LOADS! Then I found my viewpoint in the clouds, nothing around. But at least no crashes.. so I'm pretty sure the underlay .CAS file its not doing damage.

All the time I try to change ANYTHING to the original overlay model, game crashes while loading tactical city overview.

There must be something I'm missing about the overlay thing... any hint?