I'm sot sure many people are still reading the ETW/NTW forum...

I'm trying to add a new class for land units, let say "infantry_grenadier_French".
I can add the class, and set it to a unit, but when I start a Land battle, with only this unit in one of the army, the game crashes.

I tried the same with a new class for a naval unit, and it seems to work.

The question is actually for NTW, but since I can't make it work, I want to know if it is the same for ETW.

So the question is: did anyone successfully added a class for land units in the game? If it worked, maybe the way you did it can help to understand what to do for NTW.