Launcher does not recognize existing game files

So I've unzipped the launcher, and placed it into my Black Desert install directory. For some reason, the launcher thinks that the game files don't exist, even though I can clearly see them in the game folder. It then proceeds to start installing the entire game (very very slowly I might add) which has probably corrupted my game files.
Is this a common problem and is there any way around it? Thanks.

Yup, it corrupted my game files entirely. You guys may want to look into this.

I don't even know why I'm asking because I've already figured out what the problem is. It's probably because I was using a Steam directory, because I had the game installed through Steam.
Am I close?

 

Hello @ajaxsmajax and welcome to GameZBD!
First, I want you to know that I've merged the two posts you've made in this thread of yours, next time use the edit button to add more information instead of spamming your own thread.
Also, I saw your post in another thread (which is already removed since you created your own) and yes, you cannot install GameZBD Launcher on top of retail files, no matter the version you have.
You need to download GameZBD files through Launcher or Torrent, on the following link you'll find every download option:
https://forum.gameznetwork.com/threads/download-mirrors-client-v3428-community-provided.210022/

Please, remove every file you have from BDO before you install GameZBD. Yes, you may have GameZBD and Retail's version installed, but keep it on separeted folders. Also, if you have Steam version, do not put it on the same driver.