Did you download the map again too? It could be that your downloadfile is corrupt.
Hope you can understand english.
(I suggest to read the editor manual. On page 32 (english documentation) you see a screenshot of the division tab. )
Example: Create a tank unit and name it like you want like "rus_tank1". Now choose a tank from the list with "*" in front of itґs name like *T-34,*Panther.
The "*" means that itґs a playable unit.
Scroll down ( use the left mouse button to move the tab up/downwards there is an entry with the same name of your selected tank unit.
To the right there is a small button (No24 in the documentation). Click on it.
You will notice that the tank list on top of the window is greyed out now. Save the mission and play the new tank in game![]()