Hello Crazysom,

Thank you for being so descriptive. First and foremost here is a list of steps that will be converted in to a more descriptive guide.

How to play MMH55 + NCF in multiplayer:
1. Install ToTe
2. Patch ToTe to 3.1
3. Install MMH5.5
4. Generate ARMG map
5. Install NCF Utility
6. Install MMH55RC10 Beta 4 core
7. Install Chaos pack
8. Use Mapmixer to add NCF to ARMG
9. Prepare the game for LAN multiplayer
10. Use mmh55_64_NCF.exe for PvP multiplayer or MMH55_Utility_64_NCF.exe for multiplayer with players and AI.

After step 4 you have clean MMH55 installation + ARMG map. This is a moment where you can install MMH55_Texts_RU.pak and make a quick game (just a few turns) on the map just to see if everything works as it should and the game files are synced.

If all works correctly do all other steps.
Have in mind that once step 6 is done ARMG generator is not going to work anymore (it will crash as you reported). ARMG generator does not work in the NCF core. If you want to generate maps you either should keep a clean MMH55 installation elsewhere or use the NCF utility to purge the NCF configuration.

Because MMH55 + NCF + LAN has not been tested so far try with small steps as follows:
1. First use mmh55_64_NCF.exe and play 6-7 turns just with your friend to confirm it is actually playable. For the moment do not activate 8th skills.
2. If the above works try the same with MMH55_Utility_64_NCF (again no AI).
3. if step 2 works try MMH55_Utility_64_NCF with AI.

Let me know how it goes! We did not had the time to test it so any experience is valuable!