Have you checked the patches folder to make sure there is no overkill folder inside of another overkill folder? This was a very common issue this patch due to us packaging it differently from normal.
I checked, there is no overkill folder in another folder, when I try to make the modded game, should there be description to because when I make one for the yuti mod, it gives me details about what the mod adds to the game?
if you aren't seeing a description, it does seem like the folder in Patches is at least set up somehow incorrectly. Could you come to the discord server and post some screenshots so I can try to help you out? You could post them here too but it will be easier for me there.