Hi, if you encounter a dialog window saying “Level is missing” and then your game crashes, please check your game installation path for any folder name above/before “SteamApp” directory, and see if it contains the word, “load”.
For example, if your default Steam games installation folder is in a path like this one, “D:\Download\SteamApp…”, then please change either the folder name, “DownLOAD” into anything without “load” in it or better yet, move the KCD installation directory to another path where this word does not appear. If you want to move an already installed KCD game, please do so only via SteamApp and not via File Manager (Steam app has to know about the change) – here is the guide - https://support.steampowered.com/kb_article.php?ref=7418-YUBN-8129
Please note that this issue will be resolved with an upcoming patch soon.