Check my comment from here: https://forum.plutonium.pw/topic/39666/error-during-initialization-invalid-patch-fastfiles-please-verify-your-game-files-with-steam/2

thats sick, i wished there was, but once its back as an optional thing, imma start exploring on these maps

delete whats in zm folder then delete everything in AppData\Local\Plutonium\CrashDumps

Kombat Chief ty bro, this was the solution

I know this thread is pretty old, but wanted to share my experience. To get Plutonium working for me in Linux (Arch), all I did was download the exe and added it to Steam as a non-Steam game. Once I did that, I downloaded my CoD MP titles from Steam (using Proton Experimental as my compatibility). I created a /home/myUser/Games/Plutonium directory and inside that directory, I symlinked the CoD directories that Steam created from the CoD MP downloads. I did this because the Plutonium Setup would not allow me to enter the .steam directory in my home for, but once I created a directory and symlinks that the Plutonium exe could view, Setup was a breeze. I then added the Plutonium exe to my Application Manager (in KDE) so that I could add the Plutonium launcher icon on my task bar.

Doing it this way, eliminates the need to use Wine or Lutris and was honestly, the easiest setup I have had for getting Plutonium to work on Linux. Hope this helps anyone who finds it!

A friend of mine had the same thing happen to him and he solved it by selecting the folder again but if it doesn't work for you install the Microsoft Visual C++ Redistributable files

nasr werfali2002 if u have a cpu with integrated graphics try to see if the game is running on ur dedicated gpu and not the igpu, and then see if u got any driver updates hopefully this helps even on a topic this old 😄

KingVonsPupil Judging from your other post, what kind of ban is this?

did OP ever find a solution? I'm encountering the exact same problem.

You could pass the name argument in a bat file, to boot it up in LAN with another name

wow i feel so dumb lol, thank you i didn't see the t6 zombies in the launcher