That typically means those files are missing, though I'm not sure why that would be the case. Did you install the game to a directory other than the default Documents folder? If so, reinstall the game to that folder.
I just went with the default install location. I deleted the folder and reinstalled quite a few times but I always got the same error. I redownloaded the file too to see if that did anything but it was the same. I could try installing to another location to see if that makes a difference.
