Fix allows you to use the latest versions of the maps: PROMODS 2.60 + MIDDLE EAST ADD-ON 2.60 Poland Rebuilding 2.5.3. Rusmap 2.43.1 ROEXTENDED 2.9 / 3.3 Compatible with other maps (southern region, Siberia, etc.) does not affect. Use only if you have all four cards. In the mod manager, to put the above other maps.