Actually, I've got the same problem as comrade Абырвалг
I'll try to resolve what I did wrong. At the first point there is nothing special - just a copy and single line added, but it doesn't work(the editor got a mistake at 99% of mission loading, in the game it's the same picture as mentioned). It's funny interesting) Just wonder, why did u place an additional folder "envs" into "\data\k42\loc_rus\levels"?
Another question: Which way the game defines the file "Rends01_Kursk.poly"?