all the chapter conflict with each other dont get why so i give this mod 4 /10 could have been better in my eye i will say you mayed the videos for mods look every cool but because it dose not work at all and yes i have try every thing you get 4 / 10

For some reason I can't add this to my collection.

"There was a problem adding this item to the following collections:

Left 4 Dead 2 - improvements and maps - unknown failure"