Hot to play maps zombies DLC

[feliippee]

Good Evening

I have been done the steps on BO3 DLCs to try to play zombies maps like Gorod Krovi. I have downloaded the 7_dlc on the same folder that i had installed the boiii.exe from ezz launcher, but when i open the game and select some maps from dlcs (for example der eisendrache) i recive an message error " Could not load level fastfile for leve 'zm_castle': Could not read fasfile" Why i have this problem. I put some photo from the BO3 folder.

Thanks